How to get all blocks from template?

Hi, all!
Anybody know, how get all variables/block from template?

For example, I load base template(demo_ms_excel.xlsx) and function return array like ['a'=> ['name','number',score]] e.t.c.

Hi,

This feature does not exists. You have to search them yourself in the source of the template : $TBS->Source.

TBS cannot do it for now because TBS fields can be build dynamically.