How do I add multiple modifers that also modifies the options?

[protatoguy]

I'm trying to make a script that adds multiple VertexWeightMixes with the first vertex group as bone_01D2 and the vertex B as the list. However, it does not work out as expected, as it adds the modifiers, but does not change the others added after it.

import bpy
namelist = [("bone_0200"),("bone_01C8"),("bone_01CE"),"bone_01CC","bone_01C9","bone_01D0","bone_01C1","bone_01CF","bone_01BA",
			"bone_01BC","bone_01BD","bone_01BB","bone_01D4","bone_01C7","bone_01D3","bone_01C0","bone_0206","bone_0204"]
for vertex_b in namelist:
    vertex_a = "bone_01D2"
    vertexA = bpy.context.object.vertex_groups.get(vertex_a)
    vertexB = bpy.context.object.vertex_groups.get(vertex_b)
    if vertexA is None:
        print("Vertex " + vertex_a + " Does not Exist!")
        continue
    if vertexB is None:
        print("Vertex " + vertex_b + " Does not Exist!")
        continue
    bpy.ops.object.modifier_add(type='VERTEX_WEIGHT_MIX')
    bpy.context.object.modifiers["VertexWeightMix"].vertex_group_a = vertex_a
    bpy.context.object.modifiers["VertexWeightMix"].vertex_group_b = vertex_b
    bpy.context.object.modifiers["VertexWeightMix"].mix_mode = 'ADD'
    bpy.context.object.modifiers["VertexWeightMix"].mix_set = 'B'