Use local variable rather than path for image?

I am placing an image into my test report. Everything seems to work fine, just wondering if I can use a local variable, rather than the path as shown below. I cannot seem to figure out how to accomplish this, or if it can be done at all.  Thanks....

Step.Result.ReportText ="<IMG ALT='Reference Image' src='C:\LabView_Projects\dangraph.jpg'></IMG>"

Looking for

Step.Result.ReportText ="<IMG ALT='Reference Image' src=Local.variable ></IMG>"