Add record link to each part of a text string

Hi Appian Community,

I have added into my interface a grid as shown below, which was called from a record type. 

This is the code that I wrote for column 2 (relatedTo) but didn't work. I used split () to split each row into an array of text IDs, then trying to add link to each of that ID. 

a!richTextItem(
     text: split(fv!row[recordtype.relatedTo], "|"),
     link:  a!forEach(
              items: split(fv!row[recordtype.relatedTo], "|"),
              expression: a!recordLink(
                                       label: fv!item,
                                       recordType: recordType,
                                       identifier: fv!item,
                                       openLinkIn: "NEW_TAB"
        )

    )

)

I want to add link to each ID in column 2 (ID that related to ID in column 1), so when I click any in that text string, I can be directed to the record for that certain ID. I think the identifier needs to be specific but not sure how to do it.

Thanks for your help, and appologise if the code is confusing...