How Do I have Enemies spawn on screen off player?

I have tried many things, from adding or subtracting the Players position to the randomization of X,Y but this puts the Enemies in walls And/or Off the Screen, Anyone have any Ideas on what equation might work?, PlatformGame, keep in mind i'm using specific cords for randomization.

Ex: Random(672,1216)

Would using the viewportleft(), viewportright(), viewporttop() and viewportbottom() expressions help?

For example adding an action like:

Enemy on created

Enemy is overlapping wall

• enemy destroy
• system create enemy at x= random(viewportleft(0)+enemy.width,viewportright(0)-enemy.width)

Would prevent the wall overlapping.

Thanks man! Life savior on my game!