Help me fix my code

I encountered a problem like this, my idea is that I want the code to run as follows: if the device address variable has an address in it, I will connect bluetooth to that address. However, my way of assembling blocks seems incorrect, please help me

I don't know how you made this image but it is unreadable. Could you right click in the block editor and click Download blocks as image and post it here.

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it is full my block