Flow Designer populate a field on item B with a variable from item A

[MonicaW]

I have an order guide setup with sequencing so that item A has to complete before item B is assigned/launches.  I want to grab a variable value from item A to populate a field on item B.  Both items are under the same request so I'm assuming I have to somehow lookup the current request, get the variables from item A and then populate the desired field in item B.  I have tried a few things I have found here on Community, but can't seem to get the exact steps I need to make it work (keep getting no record found in look up record errors).  Could anyone provide me with a step-by-step approach to achieving this?  I have some experience in flow designer, but not a lot.  Thank you for any help.

[MonicaW]

Hi, I already tried removing the ${} from the variable name and the error on step 11 still occurs.  For the screenshot where you put in a value on the Options screen, where do I find that?

[MonicaW]

Attached.