What's wrong with my code?

[PlsGoobez]

#include "script.h"#include <string>#include <iostream>void textboxAddLine(std::string text, float x, float y, float scale){	UI::_SET_TEXT_ENTRY("STRING");	UI::SET_TEXT_FONT(1);	UI::SET_TEXT_SCALE(scale, scale);	UI::SET_TEXT_COLOUR(255, 255, 255, 255);	UI::SET_TEXT_WRAP(0.0, 1.0);	UI::SET_TEXT_CENTRE(false);	UI::SET_TEXT_DROPSHADOW(2, 2, 0, 0, 0);	UI::SET_TEXT_EDGE(1, 0, 0, 0, 205);	UI::_ADD_TEXT_COMPONENT_STRING((char *)text.c_str());	UI::_DRAW_TEXT(x, y);}void update(){	if (IsKeyJustUp(VK_F7))	{		textboxAddLine("Welcome to Los Santos Online!", .5, .5, .5);	}}void main(){		while (true)	{		update();		WAIT(0);	}}void ScriptMain(){	main();}

I hit F7 and it does nothing. The plugin loads correctly and everything, something is up with my code. Can someone tell what's wrong?

[unknown modder]

_DRAW_TEXT is a per frame drawing function, so to make it appear you need to draw it every frame. instead of calling the textboxAddLine function when the key is released, make it so releasing the key toggles a bool. then in the main loop you can draw the text when the bool is TRUE