Assingment Block Description get truncated

Hi,

I have Assignment block for which we are preparing Text description at run time using multiple field concatenated in the string,

Then we are passing this string to the  lref_view_area->title_ref = lv_title.

The text in assignment block is sometime get truncated  if the text is long.

Could somebody help me on this regard, Is their any limitation for the Text to be shown in the Assignment block header. 

Thanks,

Manish

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