Text box and set value

I know how to set a value for a text box in my INI but how can you do it in your nsi script file?

[INI]
[Field 4]
type=text
Left=0
Right=-1
Top=80
Bottom=92
minlen=5
state=

[CODE]
!insertmacro MUI_INSTALLOPTIONS_READ $1 "install.ini" "Field 4" "state"

I want the value of the text box to be:
ExpandEnvStrings $1 "%USERDOMAIN%"

Use MUI_INSTALLOPTIONS_WRITE.

Hi,

try this:

ExpandEnvStrings $1 "%USERDOMAIN%"
!insertmacro MUI_INSTALLOPTIONS_WRITE "install.ini" "Field 4" "state" $1


good luck,
Ramon

That worked. Thanks again!!