Why wont this work? Connecting two input box to a submit button

Hello all,

I am trying to submit input6 value into collection B . However, I like to get the value to be prepopulated from the input7 box. Input 7 is connecting to a collection A from a dynamic page.

When I preview this, I can get the value correctly displayed in input box 7, however no value is displayed in input box 6, given the code I tried writing below. Any suggestions please?

Solved it… Thanks everyone so much for your feedback and suggestions!!! A great help Wix contributors!