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Consider that you have below in your script...
Load * Inline
Now considering that you have a list box %Dimension
Let me break this expression so better to understand.......
The above expression will give you List of All selected values from List box %Dimension
Consider that you have selected Country and Customers, it will give you result as below
WIldMatch will check that from the selected values of %Dimension, is there any values named Country or not?
For above example, where we have result Country|Customer it will give you 1 but it there is not Country selected, it will give you 0 due to you have used Alt (Expression, 0)
For further understanding, kindly refer to QlikView Reference Manual and check WildMatch, Alt and GetFieldSelection functions...
View solution in original post
If selected '%Dimensions' contains '*Country*' then '%Dimensions'
Hope this helps.