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Access to Global Variables when using events in NAV 2016

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Posted on by stevdeb

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Hi,

I have added an event publisher to codeunit 90 that exposes the global variables:

I call the event in the same codeunit 90. Just above the call, I enter my name in a global variable "MyNameGbl".

In a subscriber function, I show the variable MyNameGbl, but unfortunately it is empty. I have already defined the MyNameGbl variable as local or global. I expected that I could access my global variable from the publisher function but I do not succeed.

Am I doing something wrong?

Many thanks,

Steven

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keoma 32,729 on at

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how do you call the var. MyNameGbl in cu 50002 ? did you declare it (also) in this cu, maybe as local var.? if yes, that could be the reason.

don't know the syntax of calling global vars from other nav objects in nav2016, but i think it should be like cu90-MyNameGbl in your case.

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stevdeb 652 on at

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Hi Jonathan,

Thanks for your help. I have tried declaring the MyNameGbl variable as a global and local variable in cu 50002, but it doesn 't work. It's not clear to me how you can access a global variable from the publisher codeunit.

Regards,

Steven

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keoma 32,729 on at

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i'll try your sample and give you then feedback.

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Mohana Yadav 61,005 Super User 2025 Season 2 on at

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Did you try removing local variable?

try only with global variable.

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stevdeb 652 on at

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Hi,

Yes, I tried with only global and only local.

Thx

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keoma 32,729 on at

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following the instructions from the Remarks section in

https://msdn.microsoft.com/en-us/library/mt299522(v=nav.90).aspx

Remarks

When you set the GlobalVarAccess property to Yes, event subscriber functions that subscribe to an event can call the global variable parameters in the object that is specified by the EventPublisherObject Property, which contains the event publisher function that declares the event. You must add variable parameters to the event subscriber functions manually and use a name and type that matches the variable declaration in the event publisher object.

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That conecpt and usage comes from .Net., bit strange, but it works.

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... so i did the following:

i declared a global vaiable "GlobVar" of datatype text in the Publisher object "Publisher CU", in your case cu 90.

then edited the parameter list of the subscriber function and simply added a new parameter at the end of the parameter list with the same name and datatype than the global variable in the publisher object.

then executed the test CU with the subscriber event.

result:

Voila! It works fine. :-D :-D

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Jan Veenendaal 510 on at

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From the NAV 2016 help on GlobalVarAccess property, section Remarks:

You must add variable parameters to the event subscriber functions manually and use a name and type that matches the variable declaration in the event publisher object.

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stevdeb 652 on at

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Hi Jonathan,

Thanks for your research. I tried it with the text variable and it works. But when I try to use the "PurchHeader" record variable in CU90 (and add it as a parameter in the subscriber function), it does not enter my subscriber function. It simply doesn't show my message. Does it work with record variables with you?

Thanks,

Steven

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keoma 32,729 on at

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hm, seems that complex datatypes like records are not supported, but only simple ones like text, integer, etc. but i will check that. as a solution you could work with the "document no." of the purchase header instead as global variable and load the purch. header in your code with fct. get and given doc no.

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Mohana Yadav 61,005 Super User 2025 Season 2 on at

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You can add a parameter to pass the PurchHeader in Published function and same signature can be used in subscription

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