Power BI中的表达

Question

我有这个表达式是qlik语法，现在我想将其更改/转换为power bi dax语法。我该怎么做

  if([Curency] = 'USD',
((Sum({< Fiscal_Year = {'2016','2017'},[Type_Billing] ={'N2','Z2'}>}[BSMA])
/Sum({< Fiscal_Year = {'2016','2017'},[Type_Billing] ={'N2','Z2'}>}[BSA_NETWR]))*vCurrency),
Sum({< Fiscal_Year = {'2016','2017'},[Type_Billing] ={'N2','Z2'}>}[BSMA])
/Sum({< Fiscal_Year = {'2016','2017'},[Type_Billing] ={'N2','Z2'}>}[BSA_NETWR]))

注意：当前我没有任何电源文件