oo okay, thank you this gives me another way of thinking, using this way i need to define which lineedit i want to go next, like on every lineedit right?,
NodePath focusnext [default: NodePath("")]
Tells Godot which node it should give keyboard focus to if the user
presses Tab on a keyboard by default. You can change the key by
editing the uifocusnext input action.
If this property is not set, Godot will select a "best guess" based on
surrounding nodes in the scene tree.
this from focus_next doc
when i click tab key, godot "guessing" which is next lineedit, and i dont need to define that like $lineedit.grab_focus(), godot like "knows" which is the next lineedit
can i just go to "next" lineedit after certain condition is true, without defining it before because it is just next to it? is that possible?
is this understandable? im sorry my poor english, but thank you