wie man jmeter veranlasst, eindeutige Werte aus der Antwort für jede Iteration auszuwählen

Ich habe die folgende Antwort von JMeter:

{"tot_cnt":{"tc":"41651","rpp":"100","pdid":"1594"},"mg":[{"id":"683","rsd":"6-May-13 \/ 6-May-13","col":"black","cc":"c_197","pn":"old_NEXUS MARKETING CAMPAIGNS-PERMANENT","loc":"PTD - 07 \/ 18 \/ BX","isf":"1","isl":"0","tq":"180","pi":"0","st":"2","dsid":"527","cid":"1917","iq":"0","wid":"WI\/txq8xa56","inv":null,"rbp":"0","pdid":"106","di":"0","pl":"0","spl":null},{"id":"17670","rsd":"6-Jun-13 \/ 6-Jun-13","col":"black","cc":"c_197","pn":"old_NEXUS MARKETING CAMPAIGNS-PERMANENT","loc":"PTD - 07 \/ 18 \/ BX","isf":"1","isl":"0","tq":"180","pi":"0","st":"2","dsid":"527","cid":"1917","iq":"0","wid":"WI\/ckwu5qe8","inv":null,"rbp":"0","pdid":"106","di":"0","pl":"0","spl":null},{"id":"22","rsd":"22-Jul-13 \/ 22-Jul-13","col":"black","cc":"c_1884","pn":"old_THE ORTHODONTIC CLINC","loc":"15 - 34 \/ 0N \/ RS","isf":"1","isl":"1","tq":"1","pi":"0","st":"2","dsid":"15","cid":"1992","iq":"0","wid":"WI\/tldj53ky","inv":null,"rbp":"0","pdid":"1582","di":"0","pl":"0","spl":null},{"id":"686","rsd":"29-Jul-13 \/ 29-Jul-13","col":"black","cc":"c_197","pn":"old_NEXUS MARKETING CAMPAIGNS-PERMANENT","loc":"PTD - 07 \/ 18 \/ BX","isf":"1","isl":"0","tq":"180","pi":"0","st":"2","dsid":"527","cid":"1917","iq":"0","wid":"WI\/n4olde1g","inv":null,"rbp":"0","pdid":"107","di":"0","pl":"0","spl":null},{"id":"73","rsd":"5-Aug-13 \/ 5-Aug-13","col":"black","cc":"c_2357","pn":"old_KCA DEATAG","loc":"338 - 34 \/ 0N \/ RS","isf":"1","isl":"1","tq":"1","pi":"0","st":"2","dsid":"338","cid":"1914","iq":"0","wid":"WI\/zdqbx1zx","inv":null,"rbp":"0","pdid":"1578","di":"0","pl":"0","spl":null},{"id":"137","rsd":"5-Aug-13 \/ 5-Aug-13","col":"black","cc":"c_1219","pn":"old_TYPHOO - J01-TYPHOO- JULY 2013","loc":"56 - 24 \/ 81 \/ L3","isf":"1","isl":"0","tq":"2","pi":"0","st":"2","dsid":"56","cid":"2090","iq":"0","wid":"WI\/azdtc77c","inv":null,"rbp":"0","pdid":"1086","di":"0","pl":"0","spl":null},{"id":"70","rsd":"12-Aug-13 \/ 12-Aug-13","col":"black","cc":"c_2394","pn":"old_SKF UK LTD","loc":"338 - 34 \/ 0N \/ RS","isf":"1","isl":"1","tq":"1","pi":"0","st":"2","dsid":"338","cid":"1914","iq":"0","wid":"WI\/45uzkvp3","inv":null,"rbp":"0","pdid":"1556","di":"0","pl":"0","spl":null},{"id":"1253","rsd":"12-Aug-13 \/ 12-Aug-13","col":"black","cc":"c_2349","pn":"old_JUST TILES","loc":"PTD - 34 \/ 0M \/ MR","isf":"1","isl":"0","tq":"1","pi":"0","st":"2","dsid":"528","cid":"1955","iq":"0","wid":"WI\/ofunwm5s","inv":null,"rbp":"0","pdid":"1559","di":"0","pl":"0","spl":null},{"id":"1320","rsd":"12-Aug-13 \/ 12-Aug-13","col":"black","cc":"c_2073","pn":"old_NEW COLLEGE SWINDON SUMMER CAMPAIGN","loc":"PTD - 34 \/ 0N \/ RS","isf":"1","isl":"0","tq":"1","pi":"0","st":"2","dsid":"528","cid":"1955","iq":"0","wid":"WI\/gpp1dejn","inv":null,"rbp":"0","pdid":null,"di":"0","pl":"0","spl":null},{"id":"27","rsd":"19-Aug-13 \/ 19-Aug-13","col":"black","cc":"c_2138","pn":"old_WIRED STUDIO PEAK MEGA REAR","loc":"15 - 34 \/ 0N \/ RS","isf":"1","isl":"1","tq":"1","pi":"0","st":"2","dsid":"15","cid":"1992","iq":"0","wid":"WI\/b5m0iyuc","inv":null,"rbp":"0","pdid":"1597","di":"0","pl":"0","spl":null},{"id":"561","rsd":"19-Aug-13 \/ 19-Aug-13","col":"black","cc":"c_3737","pn":"old_LONDON ROAD BRIDGE SCHEME DERBY CITY COUNCIL","loc":"PTD - 83 \/ 4I \/ WB","isf":"1","isl":"0","tq":"1","pi":"0","st":"2","dsid":"527","cid":"1917","iq":"0","wid":"WI\/1s1xaqxw","inv":null,"rbp":"0","pdid":"2574","di":"0","pl":"0","spl":null}

Ich benutzte(?=(?:(?!isf).)*?isf":"1)(?=(?:(?!isl).)*?isl":"0)(?=(?:(?!st).)*?st":"2)"id":"(\d+) regulärer Ausdruck zur Auswahl der erforderlichen ID.

Wenn ich den Test mit 5 Benutzern durchführe, wird bei einigen Tests dieselbe ID für verschiedene Iterationen ausgewählt, die Fehler verursachen.

Ich muss jmeter veranlassen, einige eindeutige Werte aus der Antwort für jede Iteration zu extrahieren. Wie kann ich das machen? Danke im Voraus

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