Update Yad Text Inside same Window

[xensurve]

I'm looking to update the text after command is finished without opening a new yad dialog

(

RESULT1=$(echo "checking")

# run some commands

RESULT2=$(echo " finished")

yad --title "FILE SCAN RESULTS" \

--buttons-layout=spread \
--button="Exit":0 \
--fixed \
--form \

--field "<span color='yellow' font='Times New Roman bold italic 10'>RESULT1 RESULT2</span>:LBL

How can I get it to overwrite the checking with finished text after commands are ran