Thanks for your response Serge.

What I need like this Serge.
Ex:My Recordset of "Totalsales"

month salesOfthemonth CumulativeSaleofthemonth
Jan $2,500 $2,500
Feb $3,000 $5,500
Mar $2,000 $7,500
Apr $1,500 $9,000
May $3,500 $12,500
Jun $2,000 $14,500
Jul $1,800 $16,300

When I'm using a parameter Query, let say on the "May"
I'll get the result like this.

month salesOfthemonth CumulativeSaleofthemonth
May $3,500 $12,500

Hopefuly you're clear and will help me.

still waiting your response....