Unable to increment VSNET_PROJ_VER via macro

[andy t]

Greetings,

In my script, I want to be able to retrieve a version of a VS 2005 solution and increment it.
To retrieve, I use the build in step which populates the VSNET_PROJ_VER temp variable.
For the increment setp, I use the "Set macro" type, and have the following script in the Value: field:
[IncrementVersion(Application.ExpandMacros("%VSNET_ PROJ_VER%"))]
when the increment step is run, I get the following error:
"Error expanding macros or script in property MacroValue: <Error at Line 1, Column 1 (Type mismatch: 'IncrementVersion')>

However, I have another VB pro script, where the version number is successfully incremented.
What's going on ?!