Sub report to display a large chunk of text data

I have a LargeText column in a table. I just want to displayShortText column in the  main report. If one clicks that, I want to open a subreport that has just one large text box which can display the LargeText column data from the main report dataset. In my main report I just want to display ID, shortText.

Select ID, Left(LargeText,100) ShortText, LargeText from Table

Ranga