test.jl

function create_expression()
    return Expr(:call, :*, :x, :y)
end

function create_function(expr)
    return eval(Expr(:->,:(x,y), Expr(:block, expr)))
end

function main()

    tst = create_expression()
    f = create_function(tst)
    x = 5
    y = 6
    println(f(x,y))
end

main()