Settextcontents is not working for oracle EBS java applet form

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C#

Oracle

automation

I am trying to automate Oracle form Java Applet using Java Access Bridge through c#. I am able to get value from text field, click on buttons but setTextContents is not working. This is always giving false response only for Oracle form Java Applet.

Any idea/alternate solution? Please help me to understand what is blocking to set text in Oracle EBS form Java Applet.

What I have tried:

I have tried 32 and 64 bits of windowsaccessbridge and different JDK version but it is not working for Oracle EBS Form. My code is working for all other Java swing and Applet application.

my code snippet :

if (!JabApi.setTextContents(vmID, txt.acPtr, "Test Data"))
{
throw new Exception("Error setting text");
}