Using Calculate Value to get extent of feature to input into Generate Tessellation tool

Here is what my model looks like:

• Takes Excel with lat/long and plots points
• Splits by name field
• Iterate
• And buffer into separate .gdb
• Calculate value then pulls from the buffer.gdb

This is where I get lost:

• Inputs extent into Generate Tessellation

I found this code from a separate question on here, but I haven’t figured out how to input into the Calculate Value and then add the resulting extent into the tessellation.

arcpy.Describe(fc).Extent

Here is the other post; Generate Tessellations looping through all shapefiles from folder in ArcGIS Pro ModelBuilder?