Lua [help]get something in item description

[Exedion]

i try to get a number in a item description, but i don't know well how do this, take a look of the item desc:

14:45 You see a Rat sealed rune.
It weighs 1.20 oz.
Health:[5/20]
It master is Test.
​

​

i try to return the number "5" and "20" from this desc using:

	local desc = getItemAttribute(item.uid, "description")
	local l_health = desc:match('Health:(%[%.-)')
	local m_health = desc:match('/(.+)]')

but i get this error:

[14:27:27.097] [Error - Action Interface]
[14:27:27.097] data/actions/scripts/goback.lua:onUse
[14:27:27.099] Description:
[14:27:27.099] data/actions/scripts/goback.lua:35: attempt to perform arithmetic
 on local 'l_health' (a string value)
[14:27:27.100] stack traceback:
[14:27:27.101]  data/actions/scripts/goback.lua:35: in function <data/actions/sc
ripts/goback.lua:1>

can help me PLEASEEE!!

 

[PhoOwned]

 local desc = getItemAttribute(item.uid, "description")
local a, b = desc:find('Health:')
local hp = desc:sub(b+2, tmp:find('/', b)-1)

Noob method, but works.

 

[Exedion]

 local desc = getItemAttribute(item.uid, "description")
local a, b = desc:find('Health:')
local hp = desc:sub(b+2, tmp:find('/', b)-1)

Noob method, but works.

Thanks! i will test!

EDIT: not work for me...

 

[Cykotitan]

to use them as numbers, convert them with tonumber()

 

[Exedion]

to use them as numbers, convert them with tonumber()

can you give me a little example? i don't know to much of this

 

[SpiderOT]

can you give me a little example? i don't know to much of this

+1 i need this too

 

[Cykotitan]

local desc = getItemAttribute(item.uid, 'description'):gmatch('%d+')
local l_health, m_health = tonumber(desc()), tonumber(desc())

 

[SpiderOT]

works perfect Rep ++