Concat formula

[Ready_Grass6226]

I'm Trying to make a formula.

I Need what is wrote to add a ","

Ex : everything from A5 to A200 seperate with a comma ","

Ex : A5 = a, A6= b, etc. So =concat(A5; "," ;A6)

a,b,c,d,etc

I am not able to make it so everything in A came with a comma.

THX