Making roof slopes with dynamo...! z value of point not changing

Hello everybody I tried to make a roof slope parameter by selecting end points but the peak point doen not change when i use geometry translate node plz help me…!, here is an screen shot, as you can see on the background there are 4 dots generated but i want the 3rd dot to be moved in z axis…!

Any help PLZ…!

@ssomasundaram Seems like the change in value is very small and hence not perceivable.

Difficult to understand the issue from the description provided by you.
You cannot possibly expect others to figure out which is the third point among the four.
Also consider making your graph compact by bringing nodes closer together before taking a screenshot. That would help make your image more readable.