Hi Kumar,
I don't have such note either. Could you try DS_3.setFilterExt("USERID", me.getSelectedMember("USERID").internalKey); ?
Besides, since adding .internalKey makes the return value string, you can check what's really returned by following scripts.
TEXT_1.setText(me.getSelectedMember("USERID").internalKey);
if (me.getSelectedMember("USERID").internalKey=="KumarXXX") {
APPLICATION.alert("same value");
}
Best regards,
Alfred