Hi, if I understand correctly you need this...
even if it works, if you check the debug mode it goes that using the overlap the creation of new instances will continue until the overlap is stopped. To avoid this I recommend that you use the collision instead.
The link to the project ...
https://mega.nz/file/LCBFTCyA#ZU2_G18rg1nenEIgPhWd77vyrqTNcuTSEeJxfGaRWDc
I hope I was helpful, I am a beginner too and I don't speak English, but if I can help I do it willingly. Hello and good luck.