xmlNodeGetAttribute with booleans?

[zixxonx]

Im making a shader panel/scoreboard columns panel and thats my xml file:

"true" carpaint="false" roadshine="false" killscol="true" deathscol="true" winscol="true">

That's good and it should work but i think those true and false are just strings, i did it

local shaderwater = xmlNodeGetAttribute(xmlFile,"shaderwater") 

then

outputChatBox(shaderwater) 

I should get error talking me about booleans but it shows the value also i must did it:

xmlNodeSetAttribute(xmlFile,"shaderwater",tostring(getElementData(player, "shaderwater"))) 

To save it properly. Can i change those strings too booleans or is there any other function to save booleans properly?

[Plean]

local shaderwater = xmlNodeGetAttribute(xmlFile,"shaderwater") == "true" and true or false 

This should convert strings to booleans.

[xXMADEXx]

function convertStringToBoolean ( str ) 
    local str = tostring ( string.lower ( str ) ) 
    if ( str == 'true' ) then 
        return true 
    elseif ( str == 'false' ) then 
        return false 
    end 
    return nil 
end