Hi,

I’m trying to implement maxwell equations in 2D using the so called H model in H(curl). I cannot figure out how to declare the components of the vectorial field. I’ve naively tried:

```
func Pk = P1edge;
fespace Ah(Th, Pk);
Ah u, v, u0;
macro Curl(ux, uy)[dx(uy)-dy(ux)]//
macro CrossN(ux, uy)[ux*N.y-uy*N.x]//
real rho = 1;
real T = 0;
real dt = 1;
//Problem
problem mqs([ux,uy], [vx,vy], solver=sparsesolver, eps=1.e-10)
= int2d(Th)(Mu0 * ( [ux,uy]'*[vx,vy] )/dt)
- int2d(Th)(Mu0 * ( [ux,uy]'*[vx,vy] )/dt)
+ int2d(Th)(rho * Curl(ux,uy)' * Curl(vx,vy))
+ on(BoxWall, ux=uxinit, uy=uyinit)
;
```

But ff complains with The Identifier `ux does not exist`

What’s the correct way to do that?

Thanks

C