Renaming Problem

Hi,
I have two .csv files that I am trying to have Hazel rename on a daily basis. The files are automatically generated and the name is always different. Therefore, I have to have Hazel look into the file and find a unique factor to rename the file too. I have found something unique for each file, but for the life of me, I cannot get Hazel to recognize the text inside of the file to rename it. Has anyone have any trouble with Hazel reading text inside of a .csv?
I have two .csv files that I am trying to have Hazel rename on a daily basis. The files are automatically generated and the name is always different. Therefore, I have to have Hazel look into the file and find a unique factor to rename the file too. I have found something unique for each file, but for the life of me, I cannot get Hazel to recognize the text inside of the file to rename it. Has anyone have any trouble with Hazel reading text inside of a .csv?