SAP SCRIPT help

HI Friends,

I am writing a IF command in the SAPscript. Can somebody let me knwo whether the syntax is right.

/: IF &W_GROSS_AMT1& NE &0.00&

/ ,,,,,,CONTRIBUTION DEE,,&W_GROSS_AMT1(I12)

= &,,,,&W_GROSS_AMT1(I12)&,,,,

/: ENDIF.

Its not working .

I Have to check whether W_GROSS_AMT1 shouldnt be zero.

Could you please help me with this. This is my first script.

Regards,

Kiran.