[BUG] INPUT -- myriad bugs

[rafa22]

export in5()
begin
// checkbox mods
local md,d,fcd,fyd,bw;
input({{md,1},{d,1},{fcd,1},{fyd,1},{bw,1}},"turn on variables");
input(md,"momento");
input(d,"trquinho");
input(fcd,"fcd");
input(fyd,"fyd");
input(bw,"bw");
A:=md/(d*(1-0.4*(1.25-sqrt(1.5624-md/(bw*d²*fcd)/0.272)))*fyd);
print();
print("Área de aço = ");
print(A);
end;


SOMEONE CAN HELP ME PLEASE?!