Weird Truck Trailer Attache

Hello, I creating a random truck game. I done my simple trailer attache system but I found some issue. My trailer always attache at the different location on my truck. How can I make it attache always at the same location on truck?
Always like this:

Not like this or in different position:

My trailer BP:

I tried to help myself with that tut but socket location not work and it always throws me in sky after attache