Calculate difference between today and pulldata date

I um unable to calculate days between two dates.I have also try to change format of date but not get the result. Please check this in below syntax.

date q2 Today date is ${today} false today()
calculate t1 false format-date (${q2}, '%Y/%n/%e %H:%M')
calculate q3 false pulldata('followup', 'fetchdate', 'elder_id_key', ${elder_id})
calculate t2 false format-date (${q3}, '%Y/%n/%e %H:%M')
calculate q4 false ${t1}-${t2}
note check_q4 check:${q4} false
text q5 check diff false int(${q4})

Hi @Ravinder_Singh

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I have moved your post to the Support Category and have added a few tags to make it easier for other members to find it .