s:checkBox - (Un)Setting works, but ParametersInterceptor still issues an Error (Exception)

[Torsten Krah]

Using <s:checkbox id="active" name="currentRule.active" /> 

where my currentRule bean gots a boolean active with getter + setter.
Setting, unsetting works but i am still getting this error:

17:24:55,198 ERROR [com.opensymphony.xwork2.interceptor.ParametersInterceptor] 
ParametersInterceptor - [setParameters]: Unexpected Exception caught 
setting '__checkbox_currentRule.active' on 'class 
de.test.struts2.action.RuleAction: Error setting 
expression '__checkbox_currentRule.active' with 
value '[Ljava.lang.String;@7a8946af'

What i am doing wrong? Any hints? I am using struts 2.0.11.2.


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