Set only x value of vector

[mthicke]

How do I set only the x value of a vector where x is stored in a variable?

Basically I want to move an object to the same x, y location as another object but keep it at the same z location.

[escpodgames]

Set vector XYZ action has the ability to just set X value (or Y,Z)
but you could just use the set position action to move the object in X