Restrict Mouse Movement

Hello, I'm new to C2 and game making world. Now, I'm trying to make something like Space Invaders but I want to use mouse to move player ship.

I cannot figure out how to restrict mouse movement to just only left and right. I figure I can use some kind of collision detection, but it doesn't work.

I've been searching on forum and tutorial and can't seem find anything (although, if I miss anything I would be grateful if somebody can share the link <img src="smileys/smiley1.gif" border="0" align="middle">)

Here's the capx of what I'm trying so far :

https://dl.dropbox.com/u/60994208/Construct/ShipAttack.capx

Just use 'Set X' instead of 'Set position', like this:

ShipAttack_Edited.capx (r95)

Just use 'Set X' instead of 'Set position', like this:

ShipAttack_Edited.capx (r95)

Ooh, I see now. Thank you so much , Nimtrix <img src="smileys/smiley1.gif" border="0" align="middle">