Java.lang.String ClassCastException

Hi guys

I hava a problem. I have a signature config like
<![CDATA[
       import java.util.List;
       import java.util.Map;
       import com.test.TestClass;
       TestClass.removeError(Map<String, Boolean>);
     ]]>

but I always got a Java.lang.String classcastexception cannot be conveted to Java.lang.Boolean
Who can help me ?

Thanks very much

Rio