diff --git a/stacks.sh b/stacks.sh
index 97f0671..a872d76 100644
--- a/stacks.sh
+++ b/stacks.sh
@@ -33,6 +33,7 @@ logdebug "Load stacks package"
 
 
 function newstack() {
+  logdebug "New stack ${1} created"
   eval declare -a "${1}"
 }
 
@@ -41,6 +42,7 @@ function stacksize() {
 }
 
 function pushvalue() {
+  logdebug "New value pushed on stack ${1}"
   p="${1}[$(stacksize ${1})]=\"${2}\""
   eval "$p"
 }
@@ -48,6 +50,7 @@ function pushvalue() {
 function popvalue() {
   local __popvalue_STACK="${1}"
   shift
+  logdebug "New value poped from stack ${__popvalue_STACK}"
 
   if [[ ! -z "${1}" ]]; then
     local __popvalue_COMMAND="${1}="