Can't set Vectors with [a,b,c,etc...] format?

I’m converting some arrays in my old code to vectors, and i’m getting errors where i have my former arrays set in a " my_NumberList=[1,54,7,2,8] " format. Am i going to have to set each individual value using a " my_NumberList[0]=1; my_NumberList[1]=54; … " format? ~TIA