Hey everyone,
I am new to JSL, and what im trying to do here:
open NEW WINDOW ->
enter item id -> click "OK" button ->
locate that item file (excel) -> look up the comment in that excel file
However, I am stuck in the early stage to extract TEXT EDIT BOX using button "OK"
I tried google it, but all i could find is using basic modal box.
It would be appreciated if anyone can help:)

Following is the error message:
Cannot subscript Display Box in access or evaluation of 'Subscript' , w[/*###*/"Button"] == 1,
The structure you are following is intended for Modal windows. Here is an example that I believe is more along the lines you want. You should really take the time to read the Scripting Guide.
Help==>Books==>Scripting Guide
Names Default To Here( 1 );
w = New Window( "Data and Limits file",
Border Box( top( 55 ), bottom( 55 ), Left( 66 ), Right( 66 ),
V List Box(
H Center Box( Text Box( "Locate item" ) ),
Spacer Box( size( 1, 11 ) ),
H List Box( Text Box( "item ID: " ), D = Text Edit Box( Char( " 6 DIGITS" ) ), ),
Spacer Box( size( 1, 11 ) ),
Text Box( "Click SHOW for the ERROR MSG(S)" ),
Button Box( "OK",
id = D << get text();
str = "S:\dir path\" || id || ".xls";
str_x = "S:\dir path\" || id || ".xlsx";
If(
File Exists( str ), Show( "found " || str ),
File Exists( str_x ), Show( "found " || str_x ),
Show( "neither file found" )
);
w << close window;
),
Spacer Box( size( 1, 11 ) ),
Spacer Box( size( 1, 33 ) ),
H Center Box( Text Box( "Error Code | Messages(S)" ) ),
Spacer Box( size( 1, 11 ) ),
),
)
);