add_mask, t1, GEOMETRY, #test, 1.0, LESS
add_postprocess, e1, MASK, :all, SET, @t1
add_postprocess, e2, SUM, :e1
add_field_variable, v1, GET, :e2, *velocity-z

NumberOfGeom, 2

Geom_file, -
Geom_shape, SET, BOX, 0.0, 0.0, 0.0, 0.05, 0.05, 1.0
Geom_name, test

Geom_file, -
Geom_shape, SET, BOX, $v1, 0.0, 0.0, 999.9, 1.0, 1.0
