Max schema levels XML

How can I increase max schema level in XML parser ? it just accept 10 as maximum

My output file looks like:

<Root>
<header>Value</header>
<line>
	<line>1</line>
</line>
<line>
	<line>2</line>
</line>
<line>
	<line>3</line>
</line>
<line>
	<line>4</line>
</line>
<line>
	<line>5</line>
</line>
<line>
	<line>6</line>
</line>
<line>
	<line>7</line>
</line>
<line>
	<line>8</line>
</line>
<line>
	<line>9</line>
</line>
<line>
	<line>10</line>
</line>
<line>
	<line>11</line>
</line>