Please help very urgent

Hi friends

please help me out this problem.

POSNE LIKE VBEP-POSNE, "DAYS

VBELE LIKE VBEP-VBELE, "STATUS

if itab-POSNE le 0.

ITAB-VBELE = "OVER DUE".

elseif itab-POSNE > 0 AND itab-lmeng le 10.

ITAB-VBELE = "CRITICAL".

elseif itab-POSNE > 10.

ITAB-VBELE = "UNDER FOLLOW-UP".

endif.

when i compiling the above code, am getting the following error.

Field "ELSEIF" is unknown. It is neither in one of the specified tables.

nor defined by a "data" statement. "DATA" statement.

Thanks in advance.

Regards

Rajaram