Create delegation rule in invoice Approval using Custom string option to utilize dff at invoice line

Summary:

Create delegation rule in invoice Approval using Custom string option to utilize dff at invoice line.

Content (please ensure you mask any confidential information):

We need to create a delegation rule for some users for specific 2-Way match invoice approvals. We are trying to utilize dff at invoice line where we can populate if the invoice line is 2-way or 3-way match. Can we use "Custom String" attributes while creating delegation rule to check dff at invoice line and set the delegation rule outcome accordingly?

Version (include the version you are using, if applicable):

25C

Code Snippet (add any code snippets that support your topic, if applicable):