Since 1.4.1587.x version, you can specify typography-dependent overridable variables.

To specify the overridable variables as typography dependent, use this syntax:

<Item Name="1810_F_JumpTopM" Value="10pt" />

This defines the value of F_JumpTopM variable for typography with id = 1810.

Just for comparison, a typography independent value would be specified as:

<Item Name="F_JumpTopM" Value="10pt" />

The above value would be applied to all other typographies except the one with the id = 1810.