topic Re: Variable created on document opening in QlikView

Variable created on document opening

rzenere_avvale — Mon, 26 Jan 2026 16:26:21 GMT

Hi all,

I'm working with the maps and I currently have an issue.

When I open the document a new variable "_zoom_level" is created, even if there are no triggers on opening or macro or anything at all!

If I delete it, save and close the document (and I before closing I know the variable is not created yet) and then open it again... there it is, once again

Also the new variable hasn't a value, and crushes with the name of the field "_zoom_level"... so I can't see anything at all after opening the document!

Do you have any idea about why this happens and how to prevent it?

Re: Variable created on document opening

sunny_talwar — Wed, 09 Dec 2015 19:12:14 GMT

I know maps script create _zoom_level everytime you reload the application. Do you reload the application after you close it down and reopen it?

Re: Variable created on document opening

rzenere_avvale — Wed, 09 Dec 2015 21:56:55 GMT

Hi Sunny, thanks for your reply

You are partially right, _zoom_level is created each time the application is reloaded... but it's a field! while I have a variable called exactly _zoom_level which I do not consciously set anywhere!

Anyway no, I don't reload the application when I reopen it and I do not have neither an "onopen" trigger to do it

Re: Variable created on document opening

sunny_talwar — Thu, 10 Dec 2015 00:10:44 GMT

I have this variable:

max_zoom_level = 17;

May be you have this as _zoom_level

Re: Variable created on document opening

rzenere_avvale — Thu, 10 Dec 2015 10:19:15 GMT

Nope, I have the same variable max_zoom_level...

Re: Variable created on document opening

sunny_talwar — Thu, 10 Dec 2015 11:25:07 GMT

Can you share your calendar map script and also tell us what is the value what gets assigned to it after reload?

Re: Variable created on document opening

rzenere_avvale — Mon, 14 Dec 2015 18:43:45 GMT

Hi Sunny,

sorry for the late answer

I found the problem... I had an input box which was setting the variable "_zoom_level". I didn't remember creating the input box, and it was also "hiding itself" behind another element... In the end a lucky and easy solution, thanks for your help

Re: Variable created on document opening

sunny_talwar — Mon, 14 Dec 2015 19:05:44 GMT

I am glad you were able to locate it. Hidden things tend to drive us crazy.