OK, After few changes, I got it working. Just needed to cast to “BP_FloorTile”.
But now one weird problem raised. Whenever I call “Destroy Actor” to destroy last floor tile. I get this (pic) error. Without “Destroy Actor” it is working fine. Endless Floor Tiles.
Can somebody help me to understand this error?
Update: When I set Delay to 2 Sec, only few (4 or 6) tiles generates.
When I set Delay below 2 Sec then I get above error. 