error FS0003: This value is not a function and cannot be applied. Why ?

vector.fs

type Vector1(x : float) =
    member this.X = x

    static member inline (*) (value : float, v : Vector1) =
        Vector1(v.X * value)

    static member inline (*) (v : Vector1, value : float) =
        Vector1(v.X * value)

module Vector =
    type Vector1 = { X : float }

    let inline (*) (value : float, v : Vector1) =
        { Vector1.X = v.X * value}

    let inline (*) (v : Vector1, value : float) =
        { Vector1.X = v.X * value } // error FS0003: This value is not a function and cannot be applied.