@tobybowers
I also stacked with this problem. You can do a little trick

<template>
<el-select
 filterable
 remote
 :remote-method="(e) => MySuperSearchFunction(e, myArgument)"
>
</el-select>
</template>

methods: {
 MySuperSearchFunction(query, myArgument) {
 //do stuff
 }
}

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