Change solidity?

I apologize if there is already a function that does this, but I couldn't find a way to change whether an object (in this case a sprite) is solid or not other than checking or unchecking the appropriate

"Group--> Attributes" box.

I want an object (a sprite) to be non-solid at first, and then when you use the right item it changes and becomes solid.

Sorry if I'm asking an easily-answered question...

It's a much requested feature, so much so that you should submit it to the new feature tracker .

As a work around for now (and I admit, it's pesky) you can put the sprite in a container with an invisible sprite of the same size, which is set to solid, and destroy it upon impact.

It's a much requested feature, so much so that you should submit it to the new feature tracker .

Sorry... I will.

Don't be sorry, features should be discussed here first, but this is good enough to go on there .