Whole collision not working

The whole collision not working, the player keep felling true even when changing collision and the platform object.
This happend to me after changing the image of the tilemap.

Did you add the platform behavior to the tile map?

Yes I did the its only when changing the texture.

What do you mean? Can you give more details?

I had the platform behavoir added but the whole collision map was gone after i changed the texture even with the debugger it looks i just sees it as not tilemap.