fills in functional update

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,
1

https://learninghub.kx.com/forums/topic/fills-in-functional-update

May I ask why this query doesn't forward fills the values? And what should be the correct way?

q)![tab;();(1#sym)!enlistsym;{x!fills x} enlist `px]
sym px
------
a 1
a
c 2
b 3
c
q)
2

Your syntax is incorrect

{x!fills x} enlist px!px{x!fills,/:x} enlist px
px| ^\px