When I touch the part dissapears but then reappears when I touch again Help?

##Problem

You're resetting the value of d when the event is finished with execution. Therefore, whenever you touch the brick the initial value of 1 will return to 0 every time.

##Solution

Hold the variable outside of the function. This way when the value of d is 1, the function will know not to execute.

##Efficiency

For a script like this, the line p.Transparency becomes quite redundant and inefficient after a while of copying, pasting, and modifying. The simple solution for this would be to use a numeric for loop.

What a for loop does is for every step (provided you utilize the third argument), or everything, between the first number and the second number the code will execute. For instance if I had for i=1, 10 do, since the step is not defined it is 1 by default. i is a variable for the number the numeric for loop is on. i be 1, then 2, then 3, then 4, so forth until it reaches 10.

##Final Script

local d = 1 --All you have to do is move it out of the function.

function ontouch()
    if d == 1 then  
        function Fall()
            d = 0 --Since the function is already executing, we need to set do to 0.
            local p = script.Parent
            for i=0, 1, .1 do --We are utilizing the step argument,
                --so for every .1 between 0 and 1 the code will run and the variable will change.
                p.Transparency = i
                wait(.2)
            end
            p.CanCollide = false
        end
    Fall()
    end
    
end
script.Parent.Touched:connect(ontouch)

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