Can't even get a simple fetch data to work

Can't even get a simple fetch data to work

Why is this so hard?
I have two test forms:
Form1:
Name
Age

Form 2:
Name lookup dropdown from form1
Age

I just want the age field on Form2 to auto enter the age from the selected name in the dropdown.
Essentially looking it up from Form1
It keeps telling me the name is an integer. 

What EXACTLY do I need to do?

thank you.