Storage value +1 help!

[eardrums]

So I'm making this script for a little lock picking skill through actions and I was wondering if its possible to do something.

function onUse(cid, item, fromPosition, itemEx, toPosition)

        if itemEx.itemid == 1746 and
           itemEx.uid == 2026 and
           getPlayerStorageValue(cid, 50000) == -1 then
           setPlayerStorageValue(cid, 50000, 1)
           doPlayerAddItem(cid, 2087, 1)
           doRemoveItem(cid, item.uid, 1)
           doSendMagicEffect(getCreaturePosition(cid), CONST_ME_CRAPS)
           doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, 'You advanced to lock picking 1.')
           elseif itemEx.itemid == 1746 and
           itemEx.uid == 2026 and
           getPlayerStorageValue(cid, 50000) >= 1 then
           doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, 'It is empty.')       


           elseif itemEx.itemid == 6894 and
           itemEx.uid == 2028 and
           getPlayerStorageValue(cid, 50000) == 1 then
           setPlayerStorageValue(cid, 50000, 2)
           doRemoveItem(cid, item.uid, 1)
           doSendMagicEffect(getCreaturePosition(cid), CONST_ME_CRAPS)
           elseif itemEx.itemid == 6894 and
           itemEx.uid == 2028 and
           getPlayerStorageValue(cid, 50000) == -1 then
           doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, 'You must be lock picking 1 or higher.')
           elseif itemEx.itemid == 6894 and
           itemEx.uid == 2028 and
           getPlayerStorageValue(cid, 50000) == 2 then
           doPlayerSendTextMessage(cid, MESSAGE_INFO_DESCR, 'The door is already unlocked.')           
end
return true
end

Okay so I would like to know if theres a way to add 1 to the storage value. For example:
getPlayerStorageValue(cid, 50000) == 1 then
setPlayerStorageValue(cid, 50000, 1)
is it possible to like make my storage value +1 so like writing in the value like this setPlayerStorageValue(cid, 50000, +1) so if my storage value is at 1 it would go up to 2 and if its at 2 it would go up to 3. I hope there is a way that i can do that because i tried to put +1 down but that doesnt work ofc.

Thanks!

 

[roriscrave]

So I'm making this script for a little lock picking skill through actions and I was wondering if its possible to do something.

setPlayerStorageValue(cid, 50000, getPlayerStorageValue(cid, 50000)  + 1)

 

[eardrums]

thank youuuu