meta editor

 
Good morning people, can you help me? I'm trying to join three pointers in a single one, however, so that the signal only appears when the three converge, I've edited all three in a single editor, but the signal is not appearing only when they converge. Can someone help me?
 

 
Marco vd Heijden:

bigsmile

You made my day. 

Thanks Marco 

bigsmile

Reason: