Mitsubishi Q Series Function Block

Hi! Now i used Software GXWorks 2 For Create Function Block Alarm
i had some Error About Type Of Tags, I need to move Data Binary To Word at Below
|SM400|--------------[Mov AlarmBit AlarmWord]
Tag AlarmBit Type Bit array 16 Element [0-15]
Tag AlarmWord Type Word[Signed]
But Not work!!!
normaly Outside i can use This
|SM400|--------------[Mov K4M0 D100]
Thanks.