I have a powerapp where I have a form in which users input 'Nord', 'Øst' (numeric) and 'kvadrant' (text). I want to have these values to be automatically filled in a fourth field in the same form. The string in should look like this: 100x100yNV
Currently my form looks like this:

I can't use currentsubmittedrecords for the fields as they are not yet submitted. But I think I might be able to use some form of variable setup, but I am not sure how well it will work as I already have a formula for currentsubmittedrecord in Nord and Øst. In Kvadrant I already have a variable set, so that could be reused. If I could figure out some way of storing the Nord and East as variables, as well as them being set to currentsubmittedrecord, I could put Defaultvalue for Lokal rutekoordinat to NordVar&ØstVar&KvadrantVar.
I tried this in default value for Nord
Set(NordVar; CurrentSubmittedRecord.Nord)
This produced an errormessage (in norwaegian) that roughly translates to: "behavior function in a non-behavior-property. You cannot use this property to change values other places in the app".