how can i change the lower bound using JuMP 0.19

Question

I have a variable x where its lower bound was defined as lb=zeros(3), after that I want to change for each element of lb to be equal element of an array like c=[1;2;1] what I want exactly is to make lb[i]=c[i] for i=1:length(c) I used to do this in previous versions in the following way:

function setc(c)
        for i = 1:3
            m.linconstr[i].lb = float(c[i])
        end
    end

Of course where m=Model(Clpsolver())