When i use global number values inside timer this would be incrementally?

i have a question about values global numerics inside a timer. if i not use a equation incremental. the values not should be incrementally?. see this example

the last image. someone can clarify me please?

You need to explain what you mean.

Show some blocks

its about the block timer. i know that incrementally values. but my global values are incrementally defined for set the ball x and y values . so my question is why the values global are changing if inside timer i dont build a incrementally system like (set globalvalue to getglobal value + 1).

Look at the last block, the angle is reduced by 1 in each iteration ...