Adding email addresses to variables

So I have a ticket on this right now but want to see if anyone else has done this. We have a client that emails a vendor when they have an issue with an invoice. Some vendor's have more than one email address. In the workflow I have a webservice that grabs all of the emails for that client and puts them in a variable. Some vendor's just have 1 email address while others have 3-5. I can see that the email addresses are being added to the variable, with semi colons separating each value (email@email.com; email1@email.com; email2@email.com;) etc... However when I assign the variable to the "To" box in an email step I get an error stating "No recipeints found in activity with definitionID". 

Does anyone have a trick to doing this without making a loop with several arithmatic rules?

Thanks

So I am guessing there is no easy way to do this? Seems odd that the global text variable cannot pass a string of text....

Hi

What I do is to set

GV_EmailContact1; GV_EmailContact2; GV_EmailContact3....

in the To field of the email task

Each WF variable is set with one email address.

Hope it can help

Regards

Gilles

That's the catch, I do not know how many email addresses each vendor may have. So I have a web service that performs a query against the table and pulls all of the email addresses for that one vendor and then puts it in a string with each value separated by a semi colon. 

I am just sending the email from the web service now using the MailMessage option in C. It is working fine this way.

Thanks