TCRT5000 board connected to one pin

Hi folks

I can't figure out how to connect multiple TCRT5000 boards to one pin. When connecting two - only the one of them is reacting.....

I need this just to get a detection from one out of 10 TCRT5000 boards to stop a timer and measure the time.

I've reed and searched the internet without any luck..

Hopefully someone here can guide me.

Sincerly
Steen