```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns4:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/">
    <query_name>HEMOGLOBIN A1C,@18:24:07</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>5</hlevel>
            <item_name>HEMOGLOBIN A1C, WB (LOINC:17856-6)</item_name>
            <item_key>\\i2b2_LABS\i2b2\Labtests\LAB\(LLB16) Chemistry\Hemoglobin\GHBA1C\LOINC:17856-6\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Labtests \ Chemistry \ Hemoglobin \ GHBA1C (Group:GHBA1C) \ HEMOGLOBIN A1C, WB (LOINC:17856-6)</tooltip>
            <class>ENC</class>
            <constrain_by_value>
                <value_operator>GT</value_operator>
                <value_constraint>7</value_constraint>
                <value_unit_of_measure>%</value_unit_of_measure>
                <value_type>NUMBER</value_type>
            </constrain_by_value>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all instances of Hemoglobin A1C, WB (LOINC:17856-6) lab tests with a value greater than 7% within the specified time frame, using the i2b2 query builder with the following specifications: the query name is HEMOGLOBIN A1C, the query timing is ANY, the specificity scale is set to 0, the panel number is 1, the panel timing is also ANY, the panel accuracy scale is set to 100, the item's hierarchical level is 5, and the icon is LA. The class is ENC, and the value operator is greater than (GT), with a value constraint of 7 and a unit of measure of %. The item is not a synonym.