A strange error

a simple program: ss=0 println(ss," <<<<<<<< “) for k in 3:2:20 print(k,” “) ss=ss+k println(ss,” ") end … creates no solution, but this error: ┌ Warning: Assignment to ss in soft scope is ambiguous because a global variable by the same name exists: ss will be treated as a new local. Disambiguate by using local ss to suppress this warning or global ss to assign to the existing global variable. └ @ c:\Users\Besitzer\Documents\Matlab\Saturn\test.jl:20 3 ERROR: LoadError: UndefVarError: s...