I HAVE MANY SUB VS IN MY MAIN VI, AND I WANT TO BE ABLED TO CLICK ON A BUTTON ON MY MAIN VI FRONT PANEL AND OPEN THE FRONT PANEL OF THE CHOSEN SUB VI. WITHIN MY SUB VIS I HAVE WHILE LOOPS SO WHENEVER I AM DONE WITH MY SUB VI AND IS READY TO CLOSE IT DOESN'T. I ATTACHED ANOTHER WHILE LOOP AROUND MY WHOLE SUBVI AND ATTACHED A STOP BUTTON TO IT, BUT WHEN I PRESS IT WHENEVER MY SUB VI IS RUNNING IT DON'T STOP, IT JUST KEEP RUNNING. WHAT ELSE CAN I DO TO CLOSE MY SUB VI WHEN I AM DONE USING IT AND RETURN BACK TO MY MAIN VI FRONT PANEL WHILE KEEPING MY MAIN VI RUNNING? I ALSO TRIED GOING TO VI PROPERTIES AND SELECTING OPEN SUB VI WHEN CALLED, AND CLOSE AFTER EXECUTION BUT IT STILL DOESN'T CLOSE. WHAT ELSE CAN I DO?