Can someone have a look at this FSFuelSwitchPatch?

[MatterBeam]

Hi.

I'm trying to add Metal and RocketParts to every tank which originally holds Ore.

@PART[*]:HAS[@RESOURCE[Ore],!MODULE[FSfuelSwitch]] 
{   
    %Ore = #$RESOURCE[Ore]/maxAmount$
    Metal = #$RESOURCE[Ore]/maxAmount$
	RocketParts = #$RESOURCE[Ore]/maxAmount$
    
    %totalCap = #$RESOURCE[Ore]/maxAmount$
    @totalCap += #$RESOURCE[Metal]/maxAmount$
	@totalCap += #$RESOURCE[RocketParts]/maxAmount$
    
    %tempVar = 0
    %dryCost = 0
    
    @dryCost = #$cost$
    
    %OreCost = 0
    MetalCost = 0
	RocketPartsCost = 0
    
    // Cost Ore
    @tempVar = #$RESOURCE[Ore]/maxAmount$
    @tempVar *= 0.8
    
    @dryCost -= #$OreCost$
    @cost -= #$OreCost$
    
    // Cost Metal
    @tempVar = #$totalCap$
    @tempVar *= 0.8
    @MetalCost += #$tempVar$
    
    // Cost RocketParts
    @tempVar = #$totalCap$
    @tempVar *= 0.18
    @RocketPartsCost += #$tempVar$
    
    @tempVar = 0
    MODULE {
        name = FSfuelSwitch


        resourceNames = Ore,Metal;RocketParts


        resourceAmounts = #$../Ore$,$../Metal$;$../RocketParts$;$../totalCap$


        tankCost = #$../OreCost$;$../MetalCost$;$../RocketPartsCost$
        displayCurrentTankCost = true


        hasGUI = true
        showInfo = true
        
        availableInFlight = false
        availableInEditor = true


        basePartMass = #$../mass$
        tankMass = 0;0;0;0;0
    }
    
    !RESOURCE[Ore] {}
    !RESOURCE[Metal] {}
	!RESOURCE[RocketParts] {}
    
}

I don't understand any of the totalcap stuff, but I think I made the rest of the modifications correctly.

Please tell me if I did everything alright. Thanks.

[Mecripp]

Not sure why your deleting all the Resources at the end ?

[MatterBeam]

39 minutes ago, MeCripp said:

Not sure why your deleting all the Resources at the end ?

It was there in the original Stock Fuel Switch mod I based this on. 

I'm going to test it now.

[Mecripp]

Stock fuel switch ? What you have you need the Firespitter plugin and for a fuel switch you might look at  InterstellarFuelSwitch plugin