Chants are playing at the same time error

hello, i hope someone here in the forum can help me
I try to add chants to the game that will be played regularly throughout the match one after another, I use the command - SOUND_ATTACK_BUILD_UP
and now i have 3 files for exampel, These are their names -
FM_tm_42016650_1
FM_tm_42016650_2
FM_tm_42016650_3
so in match_sounds in the command of SOUND_ATTACK_BUILD_UP i add 3 lines and I wrote there the names of the files. but in practice in the game itself all the chants are playing at the same time, instead of one after another. I tried a lot of things but I did not succeed to fix that.
Someone have an idea what did I do wrong and how to do it right? thanks