[julia-users] LoadError: UndefVarError: @contraint not defined

[Jen]

using JuMP
using Gurobi
m = Model(solver=GurobiSolver())
@variable(m,0<= x1 <=10)
@variable(m, x2 >=0)
@variable(m, x3>=0)
@objective(m, Max, x1 + 2x2 + 5x3)
@contraint(m, constraint1, -x1 + x2 + 3x3 <= -5)
@contraint(m, constraint2, x1 + 3x2 -7x3 <= 10)
print(m)
solve(m)

is giving me this error

LoadError: UndefVarError: @contraint not defined
while loading In[16], in expression starting on line 10


anyone know what is wrong?

Thanks.