The thickness value of the glass plate is essential for the machine to calculate the correct Z working height based on the data collected from heated bed leveling.
You are advised to modify this thickness value only after making modifications to the glass plate that result in a change in its thickness, replacing the glass plate with a new one, or using other unofficial build plates.
You are only permitted to type in values within the range of [4.7, 5.5], as values outside this range might result in product damages or printing issues.
After modifying the thickness value, you need to redo the heated bed leveling to make the change take effect and apply to the printing process.