How to display dimensions in a product card in OpenCart?

Question

opencart

Good afternoon!
How to display dimensions in a product card in OpenCart?!
Probably this question has already been asked many times and procrastinated, but I can not solve it! Although I found a lot of solutions on Google, but I get the same error.

I do everything as it is written at the following link:
Solution example
Please tell the php and opencart gurus what is wrong with me !!!

Answer 1

You have unknown variables, most likely an error due to inattention, in the example version 1.5, if you have 2.0 and higher, then correct the variables - in the second opencart instead of $this->data['entry_dimension'] should be $data['entry_dimension']