Hello,
You can do this as follows:
1) Get a handle to graph builder in your original script. For example, change line 1 to:
gb = Graph Builder(
2) Add the following lines at the end of your script:
cr = Report( gb );
ts = cr[Outline Box( 1 )] << xpath( "//TextSeg" ); //get a list of the textSegs
ts[Loc( ts << get text, "-0.0%" )] << set text( "" ); //set blanks where text is -0.0%
ts[Loc( ts << get text, "0.0%" )] << set text( "" ); //set blanks where text is 0.0%
cr << inval; //refresh display
Result: