How to write IF statement with variable in formula tool

[PC08]

If [NEW_TIEROPT] = "T" And [AVG_VOL] < [NEW_TIER1VOL] Then ' Activty Charge
A = [AVG_VOL] * [NEW_LIST]
AA = [AVG_VOL]
Else: A = 0 And AA = 0
End If

[binuacs]

@PC08 You need to define the new variable as new fields in Alteryx then write the formula under each field. Sample workflow is given below