Help fixing three door shower door

A home owner from Chicago says:
This is a three door sliding door shower, the long piece its about 2 inches long and goes inside the bottom door, its completely inside the door held by a screw on {the picture} and the hook or what hooks on the frame like a ninety degrees hook, goes in the Side bottom track.
track
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Paul from SWISCO responded:
We don't have this exact part. It seems similar to our 10-127, but I'm not sure if this can work. I wonder if yours is an older version of this. Look it over and let me know what you think.
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