diff --git a/MC/config/PWGLF/ini/GeneratorLFHyperNucleiPbPbGap.ini b/MC/config/PWGLF/ini/GeneratorLFHyperNucleiPbPbGap.ini
index f548c57cf..4acc1d268 100644
--- a/MC/config/PWGLF/ini/GeneratorLFHyperNucleiPbPbGap.ini
+++ b/MC/config/PWGLF/ini/GeneratorLFHyperNucleiPbPbGap.ini
@@ -1,6 +1,6 @@
 [GeneratorExternal]
 fileName=${O2DPG_ROOT}/MC/config/PWGLF/pythia8/generator_pythia8_longlived_gaptriggered.C
-funcName=generateLongLivedGapTriggered({1000010020, 1000010030, 1000020030, 1000020040, 1010010030}, 5, 10)
+funcName=generateLongLivedGapTriggered("${O2DPG_ROOT}/MC/config/PWGLF/pythia8/generator/hypernuclei_pbpb.gun", 1)
 
 [GeneratorPythia8]
 config=${O2_ROOT}/share/Generators/egconfig/pythia8_hi.cfg
diff --git a/MC/config/PWGLF/pythia8/generator/hypernuclei_pbpb.gun b/MC/config/PWGLF/pythia8/generator/hypernuclei_pbpb.gun
new file mode 100644
index 000000000..3b4a8d274
--- /dev/null
+++ b/MC/config/PWGLF/pythia8/generator/hypernuclei_pbpb.gun
@@ -0,0 +1,8 @@
+# PDG           N      ptMin   ptMax   yMin   yMax
+1000010020      20     0.2     10      -1     1
+1000010030      20     0.2     10      -1     1
+1000020030      20     0.2     10      -1     1
+1000020040      20     0.2     10      -1     1
+1010010030      20     0.2     10      -1     1
+1010010040      20     0.2     10      -1     1
+1010020040      20     0.2     10      -1     1