Script error

1

Hi dear,

I need help for the following script to amend error, please give a hand

setProperty("", _y, Number(getProperty("", _y))+Number(/:tmov));
if (Number(getProperty("", _y))>Number(/:scrheight)) {
removeMovieClip("");
}

Error Symbol=A, layer=actions, frame=2:Line 1: Operator ‘+’ must be followed by an operand
setProperty("", _y, Number(getProperty("", _y))+Number(/:tmov));

Error Symbol=A, layer=actions, frame=2:Line 2: Operator ‘>’ must be followed by an operand
if (Number(getProperty("", _y))>Number(/:scrheight)) {

Total ActionScript Errors: 2 Reported Errors: 2