PowerQuery: We cannot apply field access to the type Function.

Hi everybody,

I'm not very familiar with M, but I'm try to add a new column using a very simple expression:

if Date.Month [MyDate] < 5 then Date.AddDays ([MyDate], 365) else [MyDate]

Apparently, I'm missing out something since it returns me the following Expression Error:

PowerQuery: We cannot apply field access to the type Function.

Where am I going wrong?

Thanks everybody!