First final solution:
DEVICE=/dev/cdc-wdm0
CID_FILE=/tmp/qmi-cid
#Start data connection
qmicli --device=${DEVICE} --device-open-proxy --wds-start-network=ip-type=4,apn=${APN} --client-no-release-cid | grep CID | awk '{print $2}' | tr -d "'" > ${CID_FILE}
cat /tmp/qmi-cid
20
#Disconnect data connection
qmicli --device=${DEVICE} --device-open-proxy --wds-stop-network=disable-autoconnect --client-cid=$(cat ${CID_FILE})
Those are just parts of my script and it works 
Thank you very much 