why does this cast not work?

Remove “Set” node with the hello block connected to it. Connect the “Cast to Hello Block” the “Object” directly to “On Actor Begin Overlap” in the “other actor” or overlapped actor not sure i think other actor tough you can try both if one isn’t working…

thank you but I tried and the cast still failed, I think because the Hello_block isn’t directly overlapping the trigger and I can’t make it for the mechanic that I am trying to make. Do you have any other ideas?

Then make him overlapp and print string on success too… Is your Block having collision enabled? Else your trigger box will not overlapp it. Check collision settings on the block and make sure the collision box too is not ignoring block’s collision… Why do you have this on your Map blueprint ? Move your trigger better to a normal Actor BP… There you can go to the viewport and set your how big the trigger box radius should be and set there collsions and so on… Like here