adding a horizontal line to an encrypted EFS indicator.

[tob]

i like to add a zero line to my encrypted efs indicator. since manual line drawing every time is cumbersome i am looking for an alternate way. can i create efs formula for a zero line band and then add it on top of the efs(encrypted) indicator. if so how do i create the efs formula for a zero line band.

i save below formula in to a new script file. but it did not add the line.

addBand(0, PS_DOT, 1, Color.RGB(255,155,0),"0")