How do I increase sprite width by mouse movement?

My goal is to have the player build walls for a tower defense-style game.

But I don't get why Mouse.MovementX will not send a number to Set Width To.

Maybe an integer is needed, maybe Mouse.MovementX does not work the way I think it does?

Any suggestion or direction would help.

Thanks!

dropbox.com/s/o2zlt8mu40z4cg4/Build%20Walls.c3p

MovementX expression only works with mouse pointer lock (useful in 3D games).

What you need here is save click position in a variable

| Global number clickedX‎ = 0
+ Mouse: On Left button Clicked
-> System: Create object Sprite on layer 0 at (Mouse.X, Mouse.Y), create hierarchy: False
-> System: Set clickedX to Mouse.X

+ Mouse: Left button is down
+ Sprite: Sprite = 0
-> Sprite: Set width to Mouse.X-clickedX

Got it.

Thank you, I'll give it a try.