New rewards type -- Margin Saver Voucher
Usage: This voucher can offset users' position cost (margin). One voucher can be used for one position, no matter how big the position size is. The system will auto select the best voucher.
PIC: Max.yang1
 
"Spend 100 Avaliable" : This voucher can only be used when the position margin exceeds 100 USDT.
"$1": Voucher value. When the position margin exceeds 100 USDT, users can only spend 99USDT(100-1).