[Mauzen]

Yes, you would have to use a TextDraw array, so e.g. add this to your global variables:

new Text:draws[MAX_PLAYERS];

In TextDrawShowHideForPlayer save the textdraw in there:

draws[playerid] = textdraw;

Then you can use draws[playerid] in HideTextdraw. Only negative aspect would be, you can only have one Textdraw per player at the same time, or draws will be overwritten and the old one does not hide.