I'm having a weird match failure problem when I use onnx-graphsurgeon tools

[peanutPod]

onnxmodel.zip

I'm experiencing a strange pattern matching failure, can anyone help me see what the problem is there.
when using this pattern ,can find slice ,but matmul can not found.

    def get_plugin_pattern(self):
        def check_constant_value(val):
            def check(node):
                if not hasattr(node, "attrs") or "value" not in node.attrs:
                    return False
                value = node.attrs["value"].values
                return value.size == 1 and value == val
            return check

        
        pattern=gs.GraphPattern()

        input = pattern.variable()
        #first matmul add relu layernoemalization branch
        starts_b01 = pattern.add("B01_slice_start", "Constant", check_func=check_constant_value(0))
        ends_b01 = pattern.add("B01_slice_end", "Constant", check_func=check_constant_value(3))
        axes_b01 = pattern.add("B01_slice_axes", "Constant",check_func=check_constant_value(2))
        steps_b01 = pattern.add("B01_slice_step", "Constant", check_func=check_constant_value(1))
        slice0_b01 = pattern.add("slice0_b01", 
                            op="Slice",
                            inputs=[input, starts_b01, ends_b01, axes_b01, steps_b01],
                            num_output_tensors=1)
        matmul01_constant_input_b01 = pattern.constant()#128

        matmul01_b01=pattern.add("matmul01_b01",op="MatMul",inputs=[slice0_b01,matmul01_constant_input_b01],num_output_tensors=1)

        pattern.set_output_tensors([matmul01_b01])
        return pattern    

[peanutPod]

My onnx model info :
I want to match the red box.

matmul ifno：

[peanutPod]

starts_b01 = pattern.add("B01_slice_start", "Constant", check_func=check_constant_value(0)) and starts_b01 =pattern.constant()#128 isdifferent ,case the problem