Add single line text to metafield without replacing

[RobertsOT]

Hello i am struggling with this for a few days now.

I want to add a single line text to a metafield for multiple single line string but it just replaces the old one.

when both statements are true it only adds the second string in this case “Langarmshirts”

[paul_n]

Using metafield lists here are quite hard right now. You need to insert the variable for the old list and then change it to insert the new text. I’ve shared sample code on a few other community threads, including this one just yesterday. You’ll need to tailor it to this use case:
https://community.shopify.com/c/shopify-flow-app/need-help-creating-workflow-need-to-auto-generate-impute-to-my/m-p/2355767/highlight/true#M2954

[RobertsOT]

Its works now, thank you were much. i had to insert a 1 second wait after each step for some reason to get it to work.