Conditions on two same value labels with differents names

[Raph Selenite]

Hello,

I would like to use the value label list exported by "fre" command in a loop to make some conditions. And, i want all values labels (including 0 freq)

sysuse auto, clear
label define origin 0 "Domestic" 1 "Foreign" 2 "Test", replace
label define origin2 0 "Domestic" 1 "Foreign", replace
gen foreign2 = foreign
label values foreign2 origin2
fre foreign, includelabeled novalue
local A "`r(lab_valid)'"
fre foreign2, includelabeled novalue
local B "`r(lab_valid)'"

if "`A'"=="`B'" {
    display "oui"
}

How can i check in a loop if A and B are the same (or if foreign and foreign2 have same values labels, not only the same value label name).
With something like that : If A=B then display "Yes"
With my exemple, A and B are not the same (Domestic, foreign, test vs domestic and foreign) so i don't want to display "Yes". So my loop doesn't work

Thanks

[Phil Clayton]

Try:

 
 if `"`A'"'==`"`B'"' {

(additional ` and ' wrapped around the double quotes)

[Raph Selenite]

Thanks it works well

Now i have an other problem, is it possible to drop one value of value label ?
In my dataset, i have many variables with "I don't know" and "Don't want to answer". I want to replace that by missing value (i did it) but i want to drop the information from value label

sysuse auto, clear
label define origin 0 "Domestic" 1 "Foreign" 98 "Don't want to answer", replace
label define origin2 0 "Domestic" 1 "Foreign" 99 "Don't know", replace

Here, i want one loop to have only 0 and 1 in label values (in my dataset, in all categorical variable, i want to drop 98 and 99 from database and from label values)

Thanks!