Input a variable for the time shift 'TIME=NEXT(var)'

Hi experts,

Is there any way to make the parameter on the time shift 'TIME=NEXT(%var%)'

the idea is the user would input/send the value that will be place on the NEXT parameter..

I've tried using the get statement but it doesn't retrieve the values.,..

*REC(ACCOUNT="ACCT1",TIME=NEXT(GET(ACCOUNT="ACCT2")))

it doesn't work.. i also tried the lookup.. it also doesnt work...

Thanks,

BennieJay