variant to data In QMH remain empty

[RepMat]

hallo,
I am working on a logging module.the software uses QMH architecture.

the project has a sent Log.vi as below. this is subvi is called whenever i need to log the status.

In the logging module, i used a deque element and in the update log case, i use a variant to data for logging the data.the screenshot is attached below.

the data is empty. why?there is no error but the log data is completely empty with headers

[paul_a_cardinale]

No one can debug pictures.  Post your actual code.

[Bob_Schor]

I agree with Paul that it is difficult (and usually not worth the effort) to debug "pictures" (even if they are legitimate VI Snippets, which yours don't seem to be).  However, I noticed that the dequeue (not the spelling -- the last "ue" is important) has Cluster unbundle, suggesting there may be multiple Queues, one of which is called "logging".  If you enqueue into a Queue contained, for example, in a Cluster element named "UI", say, and try to dequeue from another Queue named "Logging", you might not get much useful information.

Bob Schor

[JÞB]

Without seeing code I CAN guess that either your message has a typo or, you lost the refnum in an unwired case.

[Yamaeda]

I would guess that a Break point and Retain values will quickly reveal the truth. You've probably misspelled "Update log" or similar in your Enqueue.

[JÞB]

---

@Yamaeda wrote:

I would guess that a Break point and Retain values will quickly reveal the truth. You've probably misspelled "Update log" or similar in your Enqueue.

---

That should be "Update Log" the case structure is not set to ignore case.  (I think that you exactly duplicated the OP's most likely source of error) 😀 

I double the Kudos if he has a "Developer Error, default" case in the actual code to catch message typos.

[Yamaeda]

---

@JÞB wrote:

---

@Yamaeda wrote:

I would guess that a Break point and Retain values will quickly reveal the truth. You've probably misspelled "Update log" or similar in your Enqueue.

---

That should be "Update Log" the case structure is not set to ignore case.  (I think that you exactly duplicated the OP's most likely source of error) 😀 

I double the Kudos if he has a "Developer Error, default" case in the actual code to catch message typos.

---

That's why i prefer Enums as Commands. 😄