Random number in specific times

Hi, I don’t have coding knowledge, and I want a random number to be displayed at specific times. Could you please fix this function for me? This formula only shows “none”.

$if(tf(f)=“00:00” & tf(f)=“00:11” & tf(f)=“00:34”, “$rnd(1, 10)”, “none”)$

Instead of using the AND (&) operator, use OR (|). With your current formula, you will only get the $rnd()$ if all the conditions are met, which will never happen.