really easy question about sequencer

i cant seem to lock my midi blocks (not sure if thats the correct term, but im referring to what holds the midi notes) to the tempo. when i used to change the tempo, all of my midi blocks would change accordingly like in musical mode. for example, when i would increase the tempo, the block of midi notes would shrink with the sequencer. now it isnt doing that for some reason. if anyone knows of this fix you’d be of great help. thanks!

switch the track to musical timebase before changing tempo.

thanks a bunch! knew it was a quick fix. much appreciated