Add some flag to control it. IE:
if g_Entity[e]['plrinzone']==1 and flag == 0 then
flag=1
PromptDuration("Weapons are disabled in this Zone",3000)
end
I guess you are looping around, so Prompt are being running, all the time.
3com
Laptop: Lenovo - Intel(R) Celeron(R) CPU 1005M @ 1.90GHz
OS: Windows 10 (64) - Ram: 4 gb - Hd: 283 gb - Video card: Intel(R) HD Graphics