无法在Go lang中将int32 protobuf分配给int [重复]

So in my protobuf I have a message object

message HelloReply {
    int32 response = 1;
}

And I try to assign the response to a variable

var resp = 0
resp = helloReply.Response

I got an error saying

cannot use helloReply.Response (type int32) as type int in assignment

P.S I'm really new to Go and Protobuf. I'm sorry if this is too basic. I already search for the solution but I think I can't find the right keyword. So I really need your help guys :(

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Create resp variable of int32 type and assign helloReply.Response to resp variable. Like this

var resp int32
resp = helloReply.Response