diff --git a/poll_button.sh b/poll_button.sh
index 1775236..537f2cd 100755
--- a/poll_button.sh
+++ b/poll_button.sh
@@ -1,12 +1,14 @@
 #!/bin/sh
 
+vars="/home/pi/birdcam/vars"
+
 gpiocmd="$(command -v gpio)"
 
 if [ -z "$gpiocmd" ]; then
 	echo "Command gpio missing, try to install ..."
 	
 	echo "Check internet connection ..."
-	pingserver="raspbian.raspberrypi.org"		### var: pingcheck destination
+	pingserver="$(cat $vars | grep pingserver | cut -d'=' -f2)"
 	if ! ping -q -c1 $pingserver>/dev/null; then
 		echo "No internet connection ..."
 		exit 0
@@ -25,16 +27,16 @@ if [ -z "$gpiocmd" ]; then
 	fi
 fi
 
-gpiopin_sw="0"			### var: gpio switch
-gpiopin_led_r="2"		### var: gpio led red
-gpiopin_led_g="29"		### var: gpio led green
+gpiopin_sw="$(cat $vars | grep gpio_sw | cut -d'=' -f2)"
+gpiopin_led_r="$(cat $vars | grep gpio_led_r | cut -d'=' -f2)"
+gpiopin_led_g="$(cat $vars | grep gpio_led_g | cut -d'=' -f2)"
 
 
-cameracmd="/home/pi/birdcam/view_birdcam.sh"	### var:  path to player script
+cameracmd="$(cat $vars | grep camerash | cut -d'=' -f2)"
 
-buttonpolling="0.05"		### var: button polling in seconds
-buttontimeout="1"		### var: button timeout in seconds
-countermax="1200"		### var: counter max for automatic switching (countermax=time/buttonpolling)
+buttonpolling="$(cat $vars | grep buttonpolling | cut -d'=' -f2)"
+buttontimeout="$(cat $vars | grep buttontimeout | cut -d'=' -f2)"
+countermax="$(cat $vars | grep countermax | cut -d'=' -f2)"
 
 $gpiocmd mode $gpiopin_led_g out
 $gpiocmd write $gpiopin_led_g 0
@@ -52,7 +54,7 @@ while true; do
 
 	$gpiocmd write $gpiopin_led_g 0
 	$gpiocmd mode $gpiopin_led_r in
-	camname="random"			### var: parameter for random video
+	camname="$(cat $vars | grep camparamr | cut -d'=' -f2)"
 	$cameracmd $camname &
 	echo "$camname started!"
 	sleep $buttontimeout
@@ -68,7 +70,7 @@ while true; do
 
 	$gpiocmd write $gpiopin_led_g 0
 	$gpiocmd mode $gpiopin_led_r in
-	camname="birdcam1"			### var: parameter for camera 1
+	camname="$(cat $vars | grep camparam1 | cut -d'=' -f2)"
 	$cameracmd $camname &
 	echo "$camname started!"
 	sleep $buttontimeout
@@ -84,7 +86,7 @@ while true; do
 	
 	$gpiocmd write $gpiopin_led_g 0
 	$gpiocmd mode $gpiopin_led_r in
-	camname="birdcam2"			### var: parameter for camera 2
+	camname="$(cat $vars | grep camparam2 | cut -d'=' -f2)"
 	$cameracmd $camname &
 	echo "$camname started!"
 	sleep $buttontimeout
diff --git a/vars b/vars
index 71e0419..91b2df7 100644
--- a/vars
+++ b/vars
@@ -12,3 +12,15 @@ usbdevice=sda1
 
 # check_playerproc.sh
 gpio_led_b=28
+
+# poll_button.sh
+gpio_sw=0
+gpio_led_r=2
+gpio_led_g=29
+camerash=/home/pi/birdcam/view_birdcam.sh
+buttonpolling=0.05
+buttontimeout=1
+countermax=1200
+camparamr=random
+camparam1=birdcam1
+camparam2=birdcam2