@Carl Love 

In the worksheet "timer4.mw", I use ":" in the end of command, but doesn't work.

Would please help me check?

Thank you.

@Carl Love 

There is the complete worksheet, plot the Excell data.

Thank you!

timer4.mw

@Carl Love 

Yes,I'm sorry. I forget to delete that. I were intending to add the SQL later.

This time I just want to plot Excel data.

Thank you.

@Carl Love 

I'm very thank you for your kind help last time.

And I have some question in the fallowing work:

1.First the work is like this

and get the result,

then I try to do this

But even if I use ":" in the it still get me this result,(in this case the plot will change when the test.xlsx change, and the excel change by hand)

So I try this way, but the plot will not change when the test.xlsx change.

Would you please help me?

There are Maple file and excel 

timer3.mw

test.xlsx

@Carl Love 

Thanks a lot, it's work.

@Carl Love 

Yes! I just need, let the program runs automatically and continuously.

Thank you :)

@Carl Love 

I need Maple program run with a time step,

ex: in the Maple worksheet, it will get data from database and plot. The database update continuously. After 1 min, Maple worksheet is stop, because it has finished the job. I want use timer to restart automatically. So the graph will be update and display continuously and automatically.

Would you please help me?

Thank you!

@Carl Love 

Yes, but how to building?

Do you have some cases can help me for building the wall?

Thank you