Mule 调用message Enricher中的组件以及如何定义message Enricher的目标值

我正在练习salesforce到mulesoft的连接。我试图从salesforce查询帐户，使用Invoke组件执行一些逻辑，并在salesforce中更新帐户名。请在下面找到XML代码。我调用时出现以下错误

执行表达式变量：Fname=\uuuu object\u以进行\u扩展失败。org.mule.api.expression.ExpressionRuntimeException

XML:

---

语法错误。。它将是target=[variable:Fname]而不是target=[variable:Fname]

---

或者只需使用target=[flowVars.Fname]

谢谢您的帮助

<http:listener-config name="HTTP_Listener_Configuration" host="localhost" port="8092" doc:name="HTTP Listener Configuration"/>
    <sfdc:config name="Salesforce__Basic_Authentication" username="username" password="*******" securityToken="Token" doc:name="Salesforce: Basic Authentication" url="https://login.salesforce.com/services/Soap/u/38.0">
        <reconnect-forever/>
    </sfdc:config>
    <spring:beans>
        <spring:bean id="Bean" name="UpdateAcc" class="com.pack.salesforceconnect.SFJava"/>
    </spring:beans>
    <flow name="salesforceconnectFlow">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/salesforce" doc:name="HTTP"/>
        <sfdc:query-single config-ref="Salesforce__Basic_Authentication" query="dsql:SELECT Id,Name,ShippingCity FROM Account ORDER BY Name DESC" doc:name="Salesforce"/>
        <dw:transform-message doc:name="Transform Message">
            <dw:input-payload doc:sample="sample_data\Account.dwl"/>
            <dw:set-payload><![CDATA[%dw 1.0
%output application/java
---
{
    Id: payload.Id,
    Name: payload.Name,
    ShippingCity: payload.ShippingCity
}]]></dw:set-payload>
        </dw:transform-message>
        <enricher source="#[payload.Name]" target="#[Variable:Fname]" doc:name="Message Enricher">
            <invoke name="Invoke" object-ref="UpdateAcc" method="ChangeSCity" methodArguments="#[payload.Name]" metadata:id="id"/>
        </enricher>
        <dw:transform-message doc:name="Transform Message">
            <dw:set-payload><![CDATA[%dw 1.0
%output application/json
---
[{
    Id: payload.Id,
    Name: variable:FName,
    ShippingCity: payload.ShippingCity
}]]]></dw:set-payload>
        </dw:transform-message>
        <set-payload value="#[payload]" doc:name="Set Payload"/>
    </flow>
</mule>

package com.pack.salesforceconnect;

public class SFJava {
    public String ChangeSCity(String Fname){
        //String ShippingCity;
        System.out.print("Account Name received : "+Fname);
        if (Fname == null){
         Fname = "New Account";
        }else{
            Fname = "Washington Industries Inc.,";
            }
        System.out.print("Account Name: "+Fname);

        return Fname;
        }

}