diff --git a/scripts/trigger.sh b/scripts/trigger.sh
index f3467c9..3911358 100755
--- a/scripts/trigger.sh
+++ b/scripts/trigger.sh
@@ -3,14 +3,34 @@
 # 1. List project triggers, looking for 'sys_osgc CI trigger'
 # 2. If not found, create the 'sys_osgc CI trigger'
 # 3. Invoke the trigger
+#
+# The trigger will pass in the following variables (declared from
+# the environment or from the SOLUTION file)
+#
+
+TRIGGER_VARS=(
+  OS_DISTRO
+  OS_RELEASE
+  PACKAGE_STREAM
+  PACKAGE_REPOSITORY
+  BRANCH
+  BUILD
+  REF
+)
+
+# Create a copy of the current values for each trigger
+# variable so we can show which ones were modified by the
+# SOLUTION import.
+for variable in ${TRIGGER_VARS[@]}; do
+  def=def_${variable}
+  export ${def}="${!variable}"
+done
 
 # Bring in the variables from SOLUTION file, supporting
 # nested substitution
 . SOLUTION
-. MANIFEST
 
 VARS=($(sed -nE "s,(^[^#][^=]*).*$,\1,pg" SOLUTION))
-VARS+=($(sed -nE "s,(^[^#][^=]*).*$,\1,pg" MANIFEST))
 for var in ${VARS[@]}; do
   export ${var}
 done
@@ -110,22 +130,19 @@ TOKEN=$(echo ${RESULTS} | sed -E 's#([[{},])#\1\n#g' | {
 echo "Using token: ${TOKEN}"
 
 function post {
-  RESULTS=$(curl --noproxy '*' -s -X POST \
-      -F "token=${TOKEN}" \
-      -F "ref=${REF}" \
-      -F "variables[OS_DISTRO]=${OS_DISTRO}" \
-      -F "variables[OS_RELEASE]=${OS_RELEASE}" \
-      -F "variables[PACKAGE_STREAM]=${PACKAGE_STREAM}" \
-      -F "variables[PACKAGE_REPOSITORY]=${PACKAGE_REPOSITORY}" \
-      -F "variables[BRANCH]=${BRANCH}" \
-      -F "variables[BUILD]=${BUILD}" \
-      -F "variables[BUILDNUMBER]=${BUILD}" \
-      ${GITLAB}/api/v4/projects/${URI_PROJECT}/trigger/pipeline)
+  CMD="curl --noproxy '*' -s -X POST -F token=${TOKEN} -F ref=${REF} "
+  for variable in ${TRIGGER_VARS[@]}; do
+    CMD+="-F variables[${variable}]=${!variable} "
+  done
+  CMD+="${GITLAB}/api/v4/projects/${URI_PROJECT}/trigger/pipeline"
+
+  RESULTS=$(${CMD})
 
   PIPELINE=$(echo ${RESULTS} | sed -nE 's,^.*details_path":"([^"]*)".*,\1,p')
 
   [[ "${PIPELINE}" == "" ]] && {
-    >&2 echo "Unable to find pipeline details URL"
+    >&2 echo "Unable to find pipeline details URL when running:"
+    >&2 echo "${CMD}"
     >&2 echo ${RESULTS}
     return 1
   }
@@ -134,8 +151,35 @@ function post {
   true
 }
 
-echo "Triggering pipeline on project ${PROJECT} for BUILD=${BUILD} and BRANCH=${BRANCH}"
-while read -n1 -r -p "Is this correct [y|N]?"; do
+cat << EOF
+Triggering pipeline on project:
+
+  ${PROJECT}
+
+With the following variables:
+
+$(
+has_override=0
+for variable in ${TRIGGER_VARS[@]}; do
+  def=def_${variable}
+  modified=' '
+  if [[ "${!def}" != "" ]]; then
+    if [[ "${!def}" != "${!variable}" ]]; then
+      modified='*'
+      has_override=1
+    fi
+  fi
+  echo " ${modified} ${variable}=${!variable}"
+done
+
+(( has_override )) && {
+  echo -e " ^\n │\n └── Value set in ENV but modified by SOLUTION file."
+}
+)
+
+EOF
+
+while read -n1 -r -p "Is this correct [y|N]? "; do
   case $REPLY in
   y|Y)
     echo ""