differnce in finding the length cobol II and cobol III

In cobol III i will find the length of the variable using the function

function lenght(variable-name)

but in cobol II its not allowed to use length function ( so i have to use inspect in that case it is returning the length of the variable which is declared.
eg;
01 varstr pic x(15) value 'hari'.
01 cnt pic 9(2).
if i am using the following syntax it is giving me the result 15 ,whether it will be possible to find the values length i.e 4 (as in length function).

Inspect varstr talling cnt for charecters.

pls give me the result if u people know it.