Please solve & ploting A from (x,y)

A:=nt(((exp(-(1/4)*g^2*l^2)/g.((w^2+c^2*(g^2))/(wh^2-w^2)))*Phi0)*(sin(w*y-*x+`ϕ`)+sin(w*y+*x+`ϕ`)), w = wp .. wh);

g:=(wp/c)*sqrt((w^2-wp^2)/wh^2-w^2);

varphi:=(w*t)/2;

Phi0:=sin(w*t/2)/(w*t/2);

wp & wh are constants.

 Tanks for attention !!!