How I can compare value number in 2 table Appsheet

[giahuylpu]

Item's Price

A	B	C
1.000	2.000	5.000

DATA

Date	Name	Item	Price
1-May	John	A	1.000
2-May	Mike	A	1.500

I want compare Column Price (DATA) vs Item's Price with Format Rule in Appsheet.

I search some function but I cant find the solution.

Thanks for help!