arithmetic on local - error

[admin]

res is not needed, the first value in the assignment will have the object value.

Code:

local strHuset1 = grp.getvalue('7/0/22')
log(strHuset1)

Some functions may return multiple values. Many of them use "res, err" form where res is the resulting value and err is the error text (only in case of an error, res is usually nil then).