Submit comand do not working in web dynpro action.

Hi experts.

We are using submit comand inside a web dynpro action:

SUBMIT z_retorno_obs WITH s_ordem EQ ls_nd_tb_fo-ordemfrete SIGN 'I' AND RETURN.

When we execute the action clicking in screen button the bopf query  did´nt work inside the submit program.

My doubt is:

Can I use submit inside web dynpro envoirement?

I tried to pass the submit to call function but did not work .

Somebody know how to solve it?

Thanks