diff --git a/config.cfg b/config.cfg
index 9508204..a656e0f 100755
--- a/config.cfg
+++ b/config.cfg
@@ -12,6 +12,7 @@ HS_CIIMG=$HS_PATH_DATASTR/template/iso                      # Folder dedicated t
 HS_LXCIMG=$HS_PATH_DATASTR/template/cache                   # Folder dedicated to LXC images  
 HS_PATH_CONF=$HS_PATH_DATASTR/snippets                      # Folder dedicated to cloud-init config files (.yaml)
 HS_LXCREPO="http://download.proxmox.com/images/system"      # Default repository of proxmox lxc images
+HS_MAX_ID=9999                                              # Default max id number
 
 #######################################################################################################################################
 # BASE PGK SETTINGS
@@ -117,4 +118,4 @@ CS_ONBOOT="0"
 ## Start immediatly after creation (value: 0|1)
 CS_SBOOT="0"
 
-#######################################################################################################################################
\ No newline at end of file
+#######################################################################################################################################
diff --git a/src/chk_mod.sh b/src/chk_mod.sh
index 2084f29..d5e436c 100755
--- a/src/chk_mod.sh
+++ b/src/chk_mod.sh
@@ -99,8 +99,8 @@ chk_args(){
         IFS=',' read -ra nums <<< "$3"
 
         for num in "${nums[@]}"; do
-            if ! [[ "$num" =~ ^[0-9]+$ ]] || ! (( num >= 100 && num <= 9999 )); then
-                msg_error "Argument: '$num' must be an integer between 100 and 9999, list must be separted by comas."
+            if ! [[ "$num" =~ ^[0-9]+$ ]] || ! (( num >= 100 && num <= $HS_MAX_ID )); then
+                msg_error "Argument: '$num' must be an integer between 100 and $HS_MAX_ID, list must be separted by comas."
                 exit 1
             fi
         done
diff --git a/src/id_mod.sh b/src/id_mod.sh
index 9dadc39..dff7ef5 100755
--- a/src/id_mod.sh
+++ b/src/id_mod.sh
@@ -28,13 +28,13 @@
 next_available_vmid() {
   qm_ids=$(qm list | awk '{print $1}')
   pct_ids=$(pct list | awk '{print $1}')
-  for (( i=100; i<=9999; i++ )); do
+  for (( i=100; i<=$HS_MAX_ID; i++ )); do
     if ! echo "$qm_ids" | grep -q -w "$i" && ! echo "$pct_ids" | grep -q -w "$i"; then
       GS_VMID="$i"
       return
     fi
   done
-  msg_error "No available virtual machine ID found in the range 100 to 9999"
+  msg_error "No available virtual machine ID found in the range 100 to $HS_MAX_ID"
 }
 
 check_vmid_list() {