Custom Tooltip not showing correct values

Hi,

I have a stacked column chart that shows the Cost of Production split between the specific inputs. 

I wanted to create a custom tooltip that shows the cost for the specific input when the user hovers over the segments of the column. When I use the auto tooltip that PBI provides, it works, is dynamic and the values are correct. However, it is not esthatically pleasing. 

The inputs themselves are columns in a table called " CAD$,T,Ha " and within the chart, I added measures I created (for proper conversation between currencies) that refrence these columns. 

I created a measure for the custom tooltip to have it switch dynamically, 

_SeleInput2 = 
VAR CurrentInput =
SWITCH(
    TRUE(),
    ISINSCOPE('CAD$,T,Ha'[Seed]), [_CurrencySeed],
    ISINSCOPE('CAD$,T,Ha'[Fertiliser]), [_CurrencyFertiliser],
    ISINSCOPE('CAD$,T,Ha'[Pesticides]), [_CurrencyPesticides],
    ISINSCOPE('CAD$,T,Ha'[Machinery]), [_CurrencyMachinery],
    ISINSCOPE('CAD$,T,Ha'[Fuel and Energy]), [_CurrencyFuelAndEnergy],
    ISINSCOPE('CAD$,T,Ha'[Irrigation Water]), [_CurrencyIrrigation],
    ISINSCOPE('CAD$,T,Ha'[Labour]), [_CurrencyLabour],
    ISINSCOPE('CAD$,T,Ha'[Land Rent]), [_Currency Land Rent],
    ISINSCOPE('CAD$,T,Ha'[Property and Utilities]), [_CurrencyProperty and Utilities],
    ISINSCOPE('CAD$,T,Ha'[Administration]), [_CurrencyAdministration],
    ISINSCOPE('CAD$,T,Ha'[Finance]), [_CurrencyFinance],
    ISINSCOPE('CAD$,T,Ha'[Other]), [_CurrencyOther],
    ISINSCOPE('CAD$,T,Ha'[Storage Depreciation]), [_CurrStorDepreci],
    ISINSCOPE('CAD$,T,Ha'[Storage Labour]), [_CurrStorLabour],
    ISINSCOPE('CAD$,T,Ha'[Storage Fuel/Energy]), [_CurrStorFuel/Energy],
    ISINSCOPE('CAD$,T,Ha'[Storage Pesticides]), [_CurrStorPesti],
    ISINSCOPE('CAD$,T,Ha'[Storage Sprout Control]), [_CurrStorSprout],
    ISINSCOPE('CAD$,T,Ha'[Storage Boxes ]), [_CurrStorBoxes],
    ISINSCOPE('CAD$,T,Ha'[Storage Property/Utilities]), [_CurrStorProperty],
    ISINSCOPE('CAD$,T,Ha'[Storage Losses (shrink)]), [_CurrStorShrinkLoss],
    ISINSCOPE('CAD$,T,Ha'[Storage Other]), [_CurrStorOther],
    BLANK()
)
RETURN
CurrentInput

The result is " - - " and it is unclear why it is doing this.