All the DWG in our database are mostly DWG 2007 files, written with Diesel expression for its title block. The area which has problem is the "DWG NO.". The desired result is to display "HF-MP-2638", whereas TrueView2007 display it as " HF-$(GETVAR,"
The Diesel expression witten is "HF-$(upper,$(substr,$(getvar,dwgname),1,$(-,$(strlen,$(getvar,dwgname)),4)))"
By the way, if use AutoCAD 2010 the program itself to open these files, you'll find that there is no issue with the Diesel expression.