WHAT IS THE "CONSTANT" TYPE FOR THE START HOUR (FROM) AND END HOUR (TO) ?

[bacharchoura1]

HI , I WANT TO USE THE TIME FILTER BLOCK AND OPTIMIZE THE START HOUR AND END HOUR SO I NEED TO CREAT A "CONSTANT" FOR THEM SO THAT I CAN OPTINIZE LATTER..
PLS : WHAT IS THE "CONSTANT" TYPE FOR THE START HOUR (FROM) AND END HOUR (TO) ?

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[jstap]

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