AsciiOutput can help tracking what values are being used during execution of your TI processes.

use:

AsciiOutput('\\path\to\debug.cma',var1,var2,NumberToString(var3));

Keep in mind Asciioutput limitations:

Edit Attributes...
if you get the following message "This operation accesses a dimension containing a large number of elements. The uploading of these elements from the server may take a few minutes. Continue?"
Editing directly the attributes cube is much faster:

• View -> Display Control Objects
• Open the cube }ElementAttributes_dimension
• Modify the required fields like in any cube