Salary component based on Condition

There is a salary component PF Employee this is deduct component i want set that if in employee doctype the field = Provident Fund Account (provident_fund_account) is account is set then pf component calculate for that employee if any employee this field is not set account then it is not calculate or deduct PF for that employee

i want the condition true then amount calculate by formulae

create salary component based on formula and in condition section you can mention pf condition

What will be the condition statement