[x2495iiii]

Short answer, no you can't. But you can make your own collision detection by using the "object is within x meters of object" function inside an infinity loop to constantly check to see if the character is touching an object (use object's width, another function, as the x value) and move that character away from the object.

Dameria wrote an early example of such a method, just search for collision detection and you should find it.