I don't know the specifics of your pool, but the block is the transactions, so if you get the lucky number and mine a block, you have mined a block that consist

I don't know the specifics of your pool, but the block is the transactions, so if you get the lucky number and mine a block, you have mined a block that consists of a specific set of transactions in a specific order. Though it's entirely possible that mining pools dictate which transactions get sent to their miners for them to try mining.