How to create a variable improved/unimproved toilet using BDHS data in STATA

How to create a variable improved/unimproved toilet using BDHS data in STATA
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numlabel, add
tab v116
gen toilet2 = 0 if v116==11|v116==12|v116==13|v116==21|v116==22|v116==41
replace toilet2 = 1 if v116==23|v116==31|v116==41|v116==42|v116==43|v116==97|v116==96|v116==31
tab toilet2
label define toilet2 0 "improved" 1 "unimproved", replace
label value toilet2 toilet2
tab toilet2
tab v116 toilet2
#BDHS #DataManagement
/ ahshanul.haqueapple.1
/ applerustat
/ 233605935111081

[@khushbukumari-ur5qr]

Hello sir , i am working on dhs data, but I want to work on only one state data set , sir please let me know , how to segregate one state data set from whole data set