start date prompt less than end date prompt

Hi,

I have this requirement to create a WEBI report having 2 date prompts(START DATE,END DATE).

Client wants to have a condition on the prompt so that START DATE should be always less than END DATE and if the user enters a date for END DATE which is less than the START DATE , it should throw a ERROR message.

Is this functionality achievable in WEBI?

I am using BO3.1

Regds,

SAmson