Rewarding players the ability to call heli?

How exactly do I add the ablity for people to call in a heli? 
i tried 
rewards add command "Call in the Heli!" "drop" "500"
rewards Add command Heli "say /spawnheli $player.name" "2"

 

I'm lost ;/

Hi all, 

I want to sell a command to call the heli to the player who buys it in the ServerRewards store, but I don't want them to have access to the command otherwise. Meaning, everytime they want to call a heli, they have to buy it from the in-game store.

I know I could just give them the permission helicontrol.callheli in the Heli Control plugin, and put this for sale in the store,

"RewardCommands": {
"Call Heli to my position": {
"Command": [
"callheli pos $player.x $player.y $player.z 1"
],
"Description": "",
"Cost": 5000
}

but then they would have access to it all the time.

You should not need to give them the permission as it is a console command.  I would just add a cooldown to it and also have it called to the person normally and not on their location instantly.
"RewardCommands": {
"Call Heli to my position": {
"Command": [
"callheli $player.id"
],
"Description": "",
"Cost": 5000,
"cooldown": 3600
}​
and where do you add it? relate to the pres / rewards add command
/rewards add command "Heli" "callheli $player.id" 100 
and have plugin call heli :-) 
In response to jaman ():
/rewards add command "Heli" "callheli $player.id" 100 
and have plugin call heli :-) 
What plugin were you using to call the heli?
helicontrol 
Awesome.  So when they buy this command from the /s the heli comes from off map and flies to the person who bought it and then they can fight it etc.?
yes exactly but i use gui shop, i have all the items there, car, boats, heli, chinool, bradley, airstrike just what's going on
In response to jaman ():
yes exactly but i use gui shop, i have all the items there, car, boats, heli, chinool, bradley, airs...
Use this Plugin:
https://umod.org/plugins/personal-heli
Use this Config-file than:
    "Call Helicopter": {
      "description": "Calls Heli for you and your Clan and attacks only you, loot can be taken only by you!",
      "iconName": null,
      "commands": [
        "personalheli.call $player.id"
      ],
      "displayName": "Call Personal Helicopter",
      "cost": 480,
      "cooldown": 0​
Use this config at "commands":
swnxQ3JvIPWduiR.jpg eyeSight
Use this Plugin:
https://umod.org/plugins/personal-heli
Use this Config-file than:
    "Call Helicopter": {
      "description": "Calls Heli for you and your Clan and attacks only you, loot can be taken only by you!",
      "iconName": null,
      "commands": [
        "personalheli.call $player.id"
      ],
      "displayName": "Call Personal Helicopter",
      "cost": 480,
      "cooldown": 0​
Use this config at "commands":

hi :) is there any way for players to be able to call the heli to have to pay with scrap?