How could I create a variable and set it’s default value using the global variables
eg
To add an text-box-type variable and use current date as it’s default value which means dynamic default value
I have tried ${__from}
however it made no sense
Welcome
What seems to be the confusion, what are you trying to do
In short how can I set ${__from} as the default value when I add a text-box type new variable
I need to display the date of the current day by default every time the page is opened
And what uses that text box type value? Will users be able to edit and enter their own date? Does it have validation?
What if they enter ‘mickey’
No just like the screenshot shows
I want to set a text-box type variable
besides I want to set it a default value which should be changed every day
or is there a kind of variable that can work as an date selector ?
Gotcha. What will you use it for? On some sort of a query?
Yes the purpose is to ensure that users can always see the data of current day by default while they browser the page
And if they want to see the data of another day they can change the value of the variable input
So it will be more convenient if there is a better choice eg date-selector
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Look into this plugin for grafana
You are trying to use a simple variable for free hand text entry to do something it is not designed for: a date picker
Someone can type mickey mouse 
OK I have looked into the calendar plugin
However it is not very suitable for our demand
And what I need is only a simple selector which should be small and easy to use
Trying to use a simple variable for free hand text entry for us is also a reluctant way
So I wander if there any better way?
Yes the better way would be you developing a date picker plugin
OOPS that should be very cool
After grafana is used, the basic ecology is very bad
I might rather consider another platform 
And thks for your help
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