Quota used (Q0000-anzhl) calculation- PA30

Hello Guru,

Here my team needs correction in the calculation of Quota used field in PA30 screen while creating annual leave abscence..

they need to count weekoff holidays if employee is taken leave for the whole week.

So we need to correct the Quota used field..

i tried with badi 'ZXPADU02' but no use

please help me