p and e() with variables

[SachinPujari]

How to use p() and e() with variables? Please mention syntax

for example,

if I have to say [Account]=P(Brick={$(=vBrick)}[Account])

The variable doesn't evaluate.

[sunny_talwar]

I think you are missing {<>} within the p() function

[Account]=P({<Brick={$(=vBrick)}>} [Account])