Text overlapping in SetStatusWindow of installshield

[Kalaimani]

In Japanese installation , text shown using SetStatusWindow panel is overlapping. The actual Japanese string is extended to next line,the next line is overlapped by progress bar.how to fix the issue,is there any string length limit? or is it possible to customize the Set Status Window  panel. 

Sample  rul script:

SetStatusWindow ( 66, @unpackingjar );

@unpacking  is a Japanese String.

Any help is appreciated.

Project - Install script

Install shield version - 2018

@SpiderLily1 

Thanks

Kalaimani