How do I get the y-value at a certain x-value?

I wanna access the height difference my player has traveled for each step; as a workaround, I tried to get the Player's y-coordinate at his actual x-position, and the y-coordinate at the previous position x-1.

Can I use Player.Y or Player.ImagePointY for this purpose, and if so: how? Something like "Player.ImagePointY(Player.ImagePointX-1)" did not work out...

Or is their another way to get these coordinates or the traveled height difference?

When you stand at initial position, you can store the player's Y in a variable. So set value 'variable' as Player.Y. Then in the new position you calculate Player.Y-variable.

You're right, that's sufficient here. Thank you!