Enabling a push button in query mode only

Hello!!
How do you enable a push button only in query mode? Do I need to write some code? If so can anybody help?

Use the following code
if :system.mode = 'ENTER-QUERY' THEN
SET_ITEM_PROPERTY('BUTTON',ENABLE,PROPERTY_TRUE);
ELSE
SET_ITEM_PROPERTY('BUTTON',ENABLE,PROPERTY_FALSE);
END IF;

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I HAVE USED THIS LOGIC FOR MAKING THE DATA ASCENDING AND
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Enabling a push button in query mode only

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