There was an attempt to change the value of a control that is not visible.

I am getting the below error on submitting on a screen.
"There was an attempt to change the value of a control that is not visible. The submitted value for this control has been discarded."
I am setting the values of the controls in "OnGetScreenEventHandler, OnInvestigationEndedEventHandler" implementation. Is there any way to check if the control is visible?
Thanks,
Rajan

Hi,
How Do I Check for the control Visiblity in the above said event handler?
Here is my code
private void formattAllDate(SessionContext currentContext) {
     log.debug("R2_XSR: Formatting all date");
setGlobalInstanceValue(currentContext,"Date1",formatDate(getGlobalInstanceAttribValue(currentContext, "Date1")));
setGlobalInstanceValue(currentContext,"Date2",formatDate(getGlobalInstanceAttribValue(currentContext, "Date2")));
setGlobalInstanceValue(currentContext,"Date3",formatDate(getGlobalInstanceAttribValue(currentContext, "Date3")));
setGlobalInstanceValue(currentContext,"Date4",formatDate(getGlobalInstanceAttribValue(currentContext, "Date4")));
setGlobalInstanceValue(currentContext,"Date5",formatDate(getGlobalInstanceAttribValue(currentContext, "Date5")));
setGlobalInstanceValue(currentContext,"Date6",formatDate(getGlobalInstanceAttribValue(currentContext, "Date6")));
setGlobalInstanceValue(currentContext,"Date7",formatDate(getGlobalInstanceAttribValue(currentContext, "Date7")));
private void setGlobalInstanceValue(SessionContext currentContext, String attribute,Boolean value){
     try{
          currentContext.getInterviewSession().getRuleSession().getGlobalEntityInstance().getEntity().getAttribute(attribute).setValue(currentContext.getInterviewSession().getRuleSession().getGlobalEntityInstance(), value);
     }catch(Exception e){
          e.printStackTrace();
private String formatDate(String dt){
String newdt[]=dt.split("/");
if (newdt.length==3){
return newdt[1]+"/"+newdt[0]+"/"+newdt[2];
return "";
}

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