" To Value " is greyed out in Infopackage Selection Tab ??????

Question

Infopackage Selection Tab has some <b>mandatory</b> selections to be fild in for loading.
"From value" is excepting values but "To Value" is greyed out ???
Its for a SAP extractor - FERC.
Help SDNer's

Answer 1

I see the Doc :
Text
Selection Options
Definition
Selection options that can be processed for a DataSource field.
Note 1:
The selection options defined here must be supported by the extractor.
Note 2:
If no other selection options are used for a DataSource field other than
'EQ' and 'BT', no further definition is required. The value of the
selection options can remain as the the default setting '0'.
The selection option combinations are encoded into a binary string using the following schema and are saved as decimal figures:
Selection option exponent (binary string)
EQ 2^0
BT 2^1
CP 2^2
GT 2^3
GE 2^4
LT 2^5
LE 2^6
NE 2^7
NB 2^8
NP 2^9
Each character in the resulting binary string describes whether the corresponding selection option is allowed or not.
That is:
<b>
1-allowed</b>
<b>0-not allowed</b>
For example:
Selection options EQ and CP can be used to select in a field.
The binary string is then: 0000000101
The corresponding decimal value that sis saved as the DataSource definition is: 12^0 + 12^2 = 5
<u>
All the selections have 1 which is allowed but why To value is greyed out ?</u>