HEader detail form


Hi All,
Sorry i am posting a dumb question... but i am really struck at this. I made a clone of P4210 as P554210 and am trying to insert a line once header information is filled... i.e after fiiling the header information when i come to grid a line should be inserted... so i tried it Event "Set focus on Grid" i have used insert Grid row system function... but while trying to see the output i could see a empty line is being inserted first and then my line is getting inserted. Please help me on this.