Spilt info on workflow indexing

I have a workflow set up, it is using indexing from a doc. There are a few places where there is info twice split by a comma. 
For example we have me@me.co.uk,you@you.co.uk
or
2 telephone numbers separated by a comma.

Is it possible to set the workflow to ignore all info after the first comma?

Hello Mark, 

you can use String.Split in an arithmetic expression. There is a Document called "Workflow Expression Parser Documentation" available in the KB or Partner Portal which lists all available expressions. 

Hope this helps. 

Greetings from Germany, 
Simon H. Hellmann
DocuWare System Consultant

Hi Simon,

Thanks for your help. I will get the document checked out.

Mark