Dot indexing is not supported for variables of this type error in Simulink

I was trying to build a closed loop control feedback for a boost acdc converter and I ran into this error message and now I'm stuck.

"Dot indexing is not supported for variables of this type"

[Walter Roberson]

Is there more message available? Giving information about where the problem occurred or which code was the problem?

[Vedanta Jaitoo]

No. And I'm using Simulink, not coding.

[Walter Roberson]

Are you able to share your model?

[Vedanta Jaitoo]

It is for my FYP, so I cannot share the file online as later it may show as plagiarism.

Is there any other way, or solution for this error message?

[Walter Roberson]

You could type out a description of your model and settings in enough detail that someone could exactly replicate it for testing purposes. But to be honest unless the model was very small I would be unlikely to bother recreating it in that level of detail.

Perhaps you should take it to your university teacher assistant or to university approved student computer help staff.

Or you could purchase a commercial license and then open a Support case.

Answer 1

[Xiaohui Zhang]

Hi, did you fix this error, I have the same error when using simulink

[Walter Roberson]

@Xiaohui Zhang

Are you able to share your model for testing purposes ?

[Xiaohui Zhang]

Hi, thanks, my model just one constant 1 plus a terminator, but even though this easy model, I cannot make it run. this same easy model can running on 2020b, but cannot in 2021b.

[Walter Roberson]

Can you share your model for testing purposes? There might be something important in the model configuration, so it is important that we test an exact model that is giving problems.

[Xiaohui Zhang]

Hi,I attached the model inside, thanks

[Walter Roberson]

When I tested in R2022a, I was getting lots of warnings that all the blocks were eliminated by optimization. I did not get the error message you indicate.

On the other hand, I do not have the Simulink Real-Time license installed on my test system, so potentially the problem was with the RTW portion of the model set-up.

[Xiaohui Zhang]

Hi, thank you, and sorry I did not make it clear, this model I need to run on jetson nvidia, which communicate with computer through wifi (as I already set in this simulink model, when you select the hardware board "nvidia jetson" in 2022a, then go to the target setting, you will see that parameter i set for jetson, then I "monitor &tune" to run this model, have this error.

The same model I can run on the 2020b but not 2021b and 2022a)