[julia-users] Problem with if else in Julia

[Lytu]

When i do:
M=rand(5,5)
a=M[:,1]' * M[:,1]
if a<0
println("Less than 0")
else
println("more")
end

I have an error: " isless has no method matching isless(::Array{Float64,2}, 
::Int 32) in < at operators.jl:32

Can anyone tell me please how to do this? Thank you