webservice output to texbox on page

[pitic]

Hy,
I have created a webservice (asmx) which has some webmethods. In same project i also have a webpage (aspx) with some multiline texboxes
which i want to use as log output from webmethods.
If i call a webmethod from another prorgram i want to display in the textboxes the oputput of that method. How can i do that? I can populate the textbox but only from the page. The webservice doesn't write anything to it.
I have made a static reference to the webpage and made the textbox public.

public static MainForm instance { get; private set; }

protected void Page_Load(object sender, EventArgs e)
{
    instance = this;
}

And I can access it from the asmx file and set the text property but i can't see any output on the page.

Thanks

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