How to select a dropdown-value mathing only partly with TruClient?

I am using TruClient to select a certain entry from a drop-down list. This list contains e.g. the following elements:

    001 Test

    002 Support

    003 Call

    ....

I am able to select an element using the full text, e.g. "001 Test" or "003 Call". Is it also possible to select a value from the dropdown list when I have a parameter which contains only the number of the entry?

Example: I have a parameter named "dropSelect" which contains the value "002". Then I want so select the drop-down value "002 Support", as the begin of the string is matching the parameter value.

Is that possible? If so, how can this be done? Or do I need to always specify the full, whole value I want to select from a drop-down list?