Update Parent Record

Hi Community,

I would like to update a parent record upon creation of the child record.

I would like to copy a value from the child record to a specific field on the parent record form. For this purpose,  I created a workflow.

This works when I only have one child record, but it does not work when I create a second or third child record.

What happens when creating the 2nd child record, the system does update the parent record but not with the details from the 2nd child record, but it pick the details from the 1st child record.

Is there any way to get around this?

Thanks much!

Debbie