Action Save row : value relationship field into another column

[JeroenP1974]

I could us some help with this problem.....I have two mysql tables. Products and Groupnumber.
Both tables are related to each other with an relationship (groupnr). If I want to add a new product I would like to use the value of the chosen realtionshipfield from a form (used to add product) als be written/used in another column of the same table. When I select the form field (in my case : {{ New Form.Fields.GroepNr }}) the id of the link will be written in the field groepnummer but its a numeric field and a error/warning is occurd. I als tried something with primaryDisplay but no luck. No error is occurd but the data is not written in the table column. Thank you for all the help and suggestions.

[mikesealey]

Hey @JeroenP1974 We have a guide on roughly this scenario in the documentation you can look at it here

tl;dr add another save row action with and in the relationship column add the _id of the saved row from the step before.

Hope this helps!