want to disable a button using and(expression1, expression2)

Hi Team, 

I have some data in array like Data=[[taskid=1,taskdone=true,comments="ABCD"],[taskid=2,taskdone=false,comments="XYZ"]]

Now I want to disable dynamically like, if in the array all indexes have taskdone=true, then only button will be enabled else it would b disabled. 

disabled: and( something which check check if both all the indexes of array have taskdone value as false then only and() returns single true

Note: array size will be dynamic, sometimes it can be 3,4,5 acc. to interface so we need to setup disabled as per that.

Please help

Thanks