Can't do query with double quotes

[HKby]

When I was trying to do q.open()
q('tab: select from Trade')
And then q('tab:update reason:{"|" sv x} each string Status, FeeReturned:FeeReturned%100000000, {"V"$"0"^-6$string x} UpdateTime, {"V"$"0"^-6$string x} CreateTime from tab