Label not being respected to join a match

SOLVED. I’ll read the function better, the label was set to null, the one was for player count.

I have this rpc function that the player uses to search for a match or to create a new one if there was no match found.
It should only list match with a label :1 .

When a player joins a match and that there are 2 players in the match, the match label switch to 0. The console is showing correctly that the match label has switch to 0.

But when the two players of a match leaves it and relaunch this function to search for a new match or create a new match, it brings them back to the old one that has his label turned to 0 instead of searching for matches that have a label:1.
The label is still to 0 all the time even when they rejoin the match (which they should be able to do in the first place)

let rpcFindMatchPairImpair: nkruntime.RpcFunction = function (ctx: nkruntime.Context, logger: nkruntime.Logger, nk: nkruntime.Nakama, payload: string): string {
    if (!ctx.userId) {
        throw Error('No user ID in context');

    if (!payload) {
        throw Error('Expects payload.');


    let matches: nkruntime.Match[];
    try {
        matches = nk.matchList(10, true, null, null, 1, null);
    } catch (error) {
        logger.error('Error listing matches: %v', error);
        throw error;

    let matchIds: string[] = [];
    if (matches.length > 0) {
        // There are one or more ongoing matches the user could join.
        matchIds = => m.matchId);
        logger.error('Another user could join a match, we need to send him back a matchid');
    } else {
        // No available matches found, create a new one.
        try {
            logger.error('We have created a Pair Impair PvP match following a user request');
        } catch (error) {
            logger.error('Error creating match: %v', error);
            throw error;

    let res: RpcFindMatchResponse = { matchIds };
    return JSON.stringify(res);

function rpcPairImpairPvBCreateMatch(context: nkruntime.Context, logger: nkruntime.Logger, nk: nkruntime.Nakama, payload: string): string 
    var matchId = nk.matchCreate('pairimpairvsbot');
    return JSON.stringify( { "match_id": matchId });

Screen when a player has asked the server to create match as he could not find one, the label is set to 1 as it should be:

Screen during the match showing the label to 0 once the two players are here.

Screen before a user tries to find a new match, label still to 0, no more players

Screen after a player tried to search a new match, he joins that match with its label to 0 except he should not have been able to do so.