select-options crush low and high values

Question

Below code

s_pruef-sign = 'I'.
s_pruef-options = 'BT'.
s_pruef-low = ''.
s_pruef-high = ''.
APPEND s_pruef.

produced this:

How can I remove these default 0 values from select-options ?

I tried CLEAR s_pruef commmand but didn't work.

Answer 1

On the selection screen: Click here:

A popup comes up, click here and the select option will be initial (press F8 after that to return to the selection screen):

In the program: Instead of CLEAR s_pruef you have to use:

CLEAR s_pruef[].

Select options are internal tables with header lines, s_pruef refers to the header line, s_pruef[] refers to the internal table.

Answer 2

Try:

REFRESH s_pruef[].

or

FREE s_pruef[].