How to trigger the function of the following blocks based on judgement

Hello,

 

The attached files are my flowgraph. I have the following question:

I want to make a judge on the output of WiFi Parse MAC block.

If the address2 in the MAC header is equal to [0x20, 0x20, 0x20, 0x20, 0x20, 0x20], the activate the following blocks (i.e. stream to vector, complex to Mag^2….).

How to implement this function?

 

Best regards,

 

Xiaoran Xu