Combine two columns based on condition

Hi, I have a dax formula to create a new column based on a condition.

the logic is simply If day == today, use a certain value from one column up until that day, otherwise use another value from another column.

Unfortunately it doesnt actually combine the columns into 1.

Spend + Prediction = 
VAR _monthtoday =
    MONTH ( TODAY () )

VAR _yeartoday = 
    YEAR ( TODAY() )

VAR _month_table =
    MONTH ('Actual Spend + Firm'[Actual Month-Year] )

VAR _year_table =
    YEAR ('Actual Spend + Firm'[Actual Month-Year] )

RETURN
    IF (
        _month_table >= _monthtoday
         &&  _year_table >= _yeartoday  ,
        'Actual Spend + Firm'[ActualPrediction_Loc 2], +
        'Actual Spend + Firm'[ActualSpending_Loc]
    )

The table below is the result of the above code, which is correct:

The problem occurs when i want to put this data into a graph:

as you can see it splits the columns still whereas in the table above it just uses the one.

Any help with this please?