Handling test request with Mandatory and Optional tags

Hello,

There is a webservice in my project having some mandatory and optional tags. For optional tags, if the data is blank then expected format of tag is

<MaturityDateFrom i:nil="true" />

however, if data exist then expected format would be

<MaturityDateFrom>some data</MaturityDateFrom>

Now while calling the request using SoapUI, is there an option available in SoapUI to handle both cases at run-time using groovy(with assumption that data will be feeded from external files like txt or excel) or some in-built soapUI functionality? or

I will have to create multiple test requests handling different combinations of mandatory and optional tags. Example, one with only mandatory tags and second with mandatory and optional tags.