This functionality is supported only if you are using the Classic Agent.
Security restrictions may prevent Silk Test Classic from recording Click() actions against custom controls in Java applets. This may happen if the applet is from an untrusted source.
Verify that you have the correct security permissions set up for your AUT. The following steps show how you can verify the settings for the test applet, installed in the <Silk Test installation directory>/javaex/jfc11 directory:
grant codeBase "file:C:/program files/silk/silktest/javaex/jfc11/*" { permission java.security.AllPermission; };