Specular adjustment in Blender not visible in Babylon

hello, today I returned to my blender (blender 2.93) to babylon project but ran in a small issue that can help me a lot in my work when resolved!

When creating a material for an object, it seems the adjusted specular I did in Blender does not come through when importing into the babylon sandbox.

Could I be missing a setting? Thanks in advance.
Below I attached my current settings, material and comparison


Reproduce the material in Blender 2.93, export it, and compare the result in the Babylon sandbox with the attached settings and images. Trace how the adjusted specular value is handled between Blender and the Babylon export, and consider the issue done when the adjustment is visible after import.

Written by the indexing model from the issue text.