diff --git a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/Parameter.java b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/Parameter.java
index 10785505..1a097408 100644
--- a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/Parameter.java
+++ b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/Parameter.java
@@ -1,8 +1,14 @@
 package org.bench4q.agent.scenario;
 
+import java.util.List;
+
+import org.bench4q.agent.scenario.dfa.DFA;
+import org.bench4q.agent.scenario.dfa.ParamPart;
+
 public class Parameter {
 	private String key;
 	private String value;
+	private ParamPart[] paramParts;
 
 	public String getKey() {
 		return key;
@@ -20,4 +26,17 @@ public class Parameter {
 		this.value = value;
 	}
 
+	public ParamPart[] getParamParts() {
+		return paramParts;
+	}
+
+	private void setParamParts(ParamPart[] paramParts) {
+		this.paramParts = paramParts;
+	}
+
+	public void compileToGenerateParts() {
+		List<ParamPart> paramParts = DFA.resolveMaltipleParamPart(this
+				.getValue());
+		this.setParamParts(paramParts.toArray(new ParamPart[paramParts.size()]));
+	}
 }
diff --git a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/VUser.java b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/VUser.java
index b5b97877..d085bf06 100644
--- a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/VUser.java
+++ b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/VUser.java
@@ -153,11 +153,16 @@ public class VUser implements Runnable {
 	private Map<String, String> prepareBehaviorParameters(Behavior behavior) {
 		Map<String, String> behaviorParameters = new HashMap<String, String>();
 		for (Parameter parameter : behavior.getParameters()) {
+			compile(parameter.getValue());
 			behaviorParameters.put(parameter.getKey(), parameter.getValue());
 		}
 		return behaviorParameters;
 	}
 
+	private void compile(String value) {
+		// TODO: Add the state pattern to this and parse the value
+	}
+
 	private void preparePlugins(Scenario scenario, Map<String, Object> plugins) {
 		for (UsePlugin usePlugin : scenario.getUsePlugins()) {
 			String pluginId = usePlugin.getId();
diff --git a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/behavior/Behavior.java b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/behavior/Behavior.java
index 80142d7a..81211001 100644
--- a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/behavior/Behavior.java
+++ b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/behavior/Behavior.java
@@ -59,6 +59,12 @@ public abstract class Behavior {
 		return "";
 	}
 
+	public void compile() {
+		for (Parameter parameter : this.getParameters()) {
+			parameter.compileToGenerateParts();
+		}
+	}
+
 	public void distillParams(SessionObject session) {
 		for (Parameter parameter : this.getParameters()) {
 			String s = parameter.getValue();
diff --git a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/dfa/DFA.java b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/dfa/DFA.java
new file mode 100644
index 00000000..7c705e71
--- /dev/null
+++ b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/dfa/DFA.java
@@ -0,0 +1,114 @@
+package org.bench4q.agent.scenario.dfa;
+
+import java.util.LinkedList;
+import java.util.List;
+
+import org.bench4q.agent.scenario.dfa.ParamPart.ParamPartType;
+import org.bench4q.agent.utils.ParameterParser;
+
+public class DFA {
+
+	public static List<ParamPart> resolveMaltipleParamPart(
+			String paramOriginValue) {
+		List<ParamPart> result;
+		StringBuilder buf1;
+		StringBuilder buf2;
+		int state;
+		ParamPart part;
+		char c;
+
+		result = new LinkedList<ParamPart>();
+		buf1 = new StringBuilder();
+		buf2 = new StringBuilder();
+		state = 0;
+		loop: for (int i = 0, len = paramOriginValue.length(); i < len; i++) {
+			c = paramOriginValue.charAt(i);
+			switch (state) {
+			case 0: /* Literal string */
+				switch (c) {
+				case '$':
+					if (buf1.length() > 0) {
+						part = new ParamPart();
+						part.setType(ParamPartType.STRING);
+						part.setContentForStringType(buf1.toString());
+						result.add(part);
+						buf1.setLength(0);
+					}
+					state = 2;
+					continue;
+				default:
+					buf1.append(c);
+					continue;
+				}
+				// no more state == 1 (irrelevantly used for "escape sequence")
+			case 2: /* Context call */
+				switch (c) {
+				case '#':
+					part = new ParamPart();
+					part.setType(ParamPartType.SESSION_ID);
+					result.add(part);
+					state = 0;
+					continue;
+				case '{':
+					state = 3;
+					continue;
+				case '$': /* $$ is the escape sequence for $ */
+					buf1.append(c);
+					state = 0;
+					continue;
+				default: /* Syntax error */
+					break loop;
+				}
+			case 3: /* plugInId */
+				switch (c) {
+				case ':':
+					state = 4;
+					continue;
+				case '{':
+					break loop;
+				case '}': /* no ':' means system property */
+					part = new ParamPart();
+					part.setType(ParamPartType.PROPERTY);
+					part.setPluginIdForContextCallType(null);
+					part.setVariableForContextCallAndProperty(ParameterParser
+							.unescape(buf1.toString()));
+					result.add(part);
+					buf1.setLength(0);
+					state = 0;
+					continue;
+				default:
+					buf1.append(c);
+					continue;
+				}
+			case 4: /* Variable */
+				switch (c) {
+				case '}':
+					part = new ParamPart();
+					part.setType(ParamPartType.CONTEXT_CALL);
+					part.setPluginIdForContextCallType(ParameterParser
+							.unescape(buf1.toString()));
+					part.setVariableForContextCallAndProperty(ParameterParser
+							.unescape(buf2.toString()));
+					result.add(part);
+					buf1.setLength(0);
+					buf2.setLength(0);
+					state = 0;
+					continue;
+				case '{': /* Syntax error */
+					break loop;
+				default:
+					buf2.append(c);
+					continue;
+				}
+			}
+		}
+		if (state == 0 && buf1.length() > 0) {
+			part = new ParamPart();
+			part.setType(ParamPartType.STRING);
+			part.setContentForStringType(buf1.toString());
+			result.add(part);
+		}
+		return result;
+	}
+
+}
diff --git a/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/dfa/ParamPart.java b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/dfa/ParamPart.java
new file mode 100644
index 00000000..c6cf19e5
--- /dev/null
+++ b/Bench4Q-Agent/src/main/java/org/bench4q/agent/scenario/dfa/ParamPart.java
@@ -0,0 +1,65 @@
+package org.bench4q.agent.scenario.dfa;
+
+public class ParamPart {
+	public static enum ParamPartType {
+		STRING, SESSION_ID, CONTEXT_CALL, PROPERTY
+	}
+
+	private ParamPartType type;
+	private String contentForStringType;
+	private String pluginIdForContextCallType;
+	private String variableForContextCallAndProperty;
+
+	public ParamPartType getType() {
+		return type;
+	}
+
+	public void setType(ParamPartType type) {
+		this.type = type;
+	}
+
+	public String getContentForStringType() {
+		return contentForStringType;
+	}
+
+	public void setContentForStringType(String contentForStringType) {
+		this.contentForStringType = contentForStringType;
+	}
+
+	public String getPluginIdForContextCallType() {
+		return pluginIdForContextCallType;
+	}
+
+	public void setPluginIdForContextCallType(String pluginIdForContextCallType) {
+		this.pluginIdForContextCallType = pluginIdForContextCallType;
+	}
+
+	public String getVariableForContextCallAndProperty() {
+		return variableForContextCallAndProperty;
+	}
+
+	public void setVariableForContextCallAndProperty(
+			String variableForContextCallAndProperty) {
+		this.variableForContextCallAndProperty = variableForContextCallAndProperty;
+	}
+
+	@Override
+	public String toString() {
+		switch (type) {
+		case STRING:
+			return this.contentForStringType;
+		case SESSION_ID:
+			return "$#";
+		case CONTEXT_CALL:
+			return "${" + this.pluginIdForContextCallType + ":"
+					+ this.variableForContextCallAndProperty + "}";
+		case PROPERTY:
+			return "${" + this.variableForContextCallAndProperty + "}";
+		default:
+			return "Plug-in parameter part " + this.contentForStringType + "/"
+					+ this.pluginIdForContextCallType + "/"
+					+ this.variableForContextCallAndProperty
+					+ " has an unspecified type " + type.toString();
+		}
+	}
+}
diff --git a/Bench4Q-Agent/src/main/java/org/bench4q/agent/utils/ParameterParser.java b/Bench4Q-Agent/src/main/java/org/bench4q/agent/utils/ParameterParser.java
index ba876655..d45c991b 100644
--- a/Bench4Q-Agent/src/main/java/org/bench4q/agent/utils/ParameterParser.java
+++ b/Bench4Q-Agent/src/main/java/org/bench4q/agent/utils/ParameterParser.java
@@ -101,7 +101,7 @@ public abstract class ParameterParser {
 	 *            the string where some characters are escaped by '\' character
 	 * @return the unescaped string
 	 */
-	static String unescape(String value) {
+	public static String unescape(String value) {
 		StringBuilder result = new StringBuilder();
 		char c;
 		boolean escape = false; // escape sequence
diff --git a/Bench4Q-Agent/src/test/java/org/bench4q/agent/test/scenario/Test_DFA.java b/Bench4Q-Agent/src/test/java/org/bench4q/agent/test/scenario/Test_DFA.java
new file mode 100644
index 00000000..8a3e5477
--- /dev/null
+++ b/Bench4Q-Agent/src/test/java/org/bench4q/agent/test/scenario/Test_DFA.java
@@ -0,0 +1,94 @@
+package org.bench4q.agent.test.scenario;
+
+import static org.junit.Assert.*;
+
+import java.util.List;
+
+import org.bench4q.agent.scenario.dfa.DFA;
+import org.bench4q.agent.scenario.dfa.ParamPart;
+import org.bench4q.agent.scenario.dfa.ParamPart.ParamPartType;
+import org.junit.Test;
+
+public class Test_DFA {
+	private static final String TEST_CASE = "${csvProvider0:userName}";
+	private static final String TEST_CASE2 = "${csvProvider0:userName}$#";
+	private static final String TEST_CASE3 = "${csvProvider0:userName}$#okOrNot";
+	private static final String TEST_CASE4 = "${csvProvider0:userName}$#okOrNot${file.separator}";
+
+	@Test
+	public void test_resolveMaltipleParamPart_WithOnePluginIdVariable() {
+		List<ParamPart> result = DFA.resolveMaltipleParamPart(TEST_CASE);
+		assertEquals(1, result.size());
+		assertEquals("csvProvider0", result.get(0)
+				.getPluginIdForContextCallType());
+		assertEquals("userName", result.get(0)
+				.getVariableForContextCallAndProperty());
+		assertNull(result.get(0).getContentForStringType());
+	}
+
+	@Test
+	public void test_resolveMaltipleParamPart_WithOnePluginIdVariable_AND_OneSessionID() {
+		List<ParamPart> result = DFA.resolveMaltipleParamPart(TEST_CASE2);
+		assertEquals(2, result.size());
+		assertEquals("csvProvider0", result.get(0)
+				.getPluginIdForContextCallType());
+		assertEquals(ParamPartType.CONTEXT_CALL, result.get(0).getType());
+		assertEquals("userName", result.get(0)
+				.getVariableForContextCallAndProperty());
+		assertNull(result.get(0).getContentForStringType());
+		assertEquals(ParamPartType.SESSION_ID, result.get(1).getType());
+		assertNull(result.get(1).getContentForStringType());
+		assertNull(result.get(1).getPluginIdForContextCallType());
+		assertNull(result.get(1).getVariableForContextCallAndProperty());
+	}
+
+	@Test
+	public void test_resolveMaltipleParamPart_WithOnePluginIdVariable_AND_OneSessionID_And_PlainString() {
+		List<ParamPart> result = DFA.resolveMaltipleParamPart(TEST_CASE3);
+		assertEquals(3, result.size());
+		assertEquals("csvProvider0", result.get(0)
+				.getPluginIdForContextCallType());
+		assertEquals(ParamPartType.CONTEXT_CALL, result.get(0).getType());
+		assertEquals("userName", result.get(0)
+				.getVariableForContextCallAndProperty());
+		assertNull(result.get(0).getContentForStringType());
+
+		assertEquals(ParamPartType.SESSION_ID, result.get(1).getType());
+		assertNull(result.get(1).getContentForStringType());
+		assertNull(result.get(1).getPluginIdForContextCallType());
+		assertNull(result.get(1).getVariableForContextCallAndProperty());
+
+		assertEquals(ParamPartType.STRING, result.get(2).getType());
+		assertNull(result.get(2).getPluginIdForContextCallType());
+		assertNull(result.get(2).getVariableForContextCallAndProperty());
+		assertEquals("okOrNot", result.get(2).getContentForStringType());
+	}
+
+	@Test
+	public void test_resolveMaltipleParamPart_WithOnePluginIdVariable_AND_OneSessionID_And_PlainString_AND_Property() {
+		List<ParamPart> result = DFA.resolveMaltipleParamPart(TEST_CASE4);
+		assertEquals(4, result.size());
+		assertEquals("csvProvider0", result.get(0)
+				.getPluginIdForContextCallType());
+		assertEquals(ParamPartType.CONTEXT_CALL, result.get(0).getType());
+		assertEquals("userName", result.get(0)
+				.getVariableForContextCallAndProperty());
+		assertNull(result.get(0).getContentForStringType());
+
+		assertEquals(ParamPartType.SESSION_ID, result.get(1).getType());
+		assertNull(result.get(1).getContentForStringType());
+		assertNull(result.get(1).getPluginIdForContextCallType());
+		assertNull(result.get(1).getVariableForContextCallAndProperty());
+
+		assertEquals(ParamPartType.STRING, result.get(2).getType());
+		assertNull(result.get(2).getPluginIdForContextCallType());
+		assertNull(result.get(2).getVariableForContextCallAndProperty());
+		assertEquals("okOrNot", result.get(2).getContentForStringType());
+
+		assertEquals(ParamPartType.PROPERTY, result.get(3).getType());
+		assertNull(result.get(3).getPluginIdForContextCallType());
+		assertNull(result.get(3).getContentForStringType());
+		assertEquals("file.separator", result.get(3)
+				.getVariableForContextCallAndProperty());
+	}
+}
diff --git a/relative Docs/取参数状态机.vsdx b/relative Docs/取参数状态机.vsdx
index 265a8ee6..0604fcf9 100644
Binary files a/relative Docs/取参数状态机.vsdx and b/relative Docs/取参数状态机.vsdx differ