How to validate string that contain 2 restriction - xsd-validation

Question

I need to validate string with 2 restrictions. The string length is 6. First 3 elements is between [-1000-1000] and the other 3 elements is between [-3.14 -3.14].
For example: 1000 1000 900 3 2 3.14
I've tried this:
<xs:complexType name="aaa">
<xs:simpleContent>
<xs:extension base="bb">
<xs:attribute name="size" type="xs:string" use="required"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:simpleType name="bb">
<xs:union memberTypes="listtry listtry2 ">
</xs:union>
</xs:simpleType>
<xs:simpleType name="listtry">
<xs:restriction base="mytry">
<xs:length value="6"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="mytry">
<xs:list itemType="try1"></xs:list>
</xs:simpleType>
<xs:simpleType name="try1">
<xs:restriction base="xs:double">
<xs:maxInclusive value="100000"/>
<xs:minInclusive value="-100000"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="listtry2">
<xs:restriction base="mytry2">
<xs:length value="6"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="mytry2">
<xs:list itemType="tryPI"> </xs:list>
</xs:simpleType>
<xs:simpleType name="tryPI">
<xs:restriction base="xs:double">
<xs:maxInclusive value="3.14"/>
<xs:minInclusive value="-3.14"/>
</xs:restriction>
</xs:simpleType>

Answer 1

You can create rules for each individual value (as you have done), but their is no way to say a list of values has different validation rules for each element.
The closest I think your going to get is an regex (xs:pattern) that restricts each value. Something like this
-?\d{1,4} -?\d{1,4} -?\d{1,4} -?\d(.\d+)? -?\d(.\d+)? -?\d(.\d+)?
(I'm not great at regex stuff, but I think this is close!)
A better approach perhaps is to break the 6 values out into separate 2 (maybe 6) element/attributes. Then you can apply the validation rules you have already. to each group of values.
I Splitting the value across 2 attributes you would get something like
<?xml version="1.0" encoding="utf-8" ?>
<!--Created with Liquid Studio 2017 (https://www.liquid-technologies.com)-->
<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="Thing">
<xs:complexType>
<xs:attribute name="Values3x1000" type="list3Value1000Type" />
<xs:attribute name="Value3Pi" type="list3ValuePiType" />
</xs:complexType>
</xs:element>
<xs:simpleType name="value1000Type">
<xs:restriction base="xs:double">
<xs:maxInclusive value="1000" />
<xs:minInclusive value="-1000" />
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="listValue1000Type">
<xs:list itemType="value1000Type" />
</xs:simpleType>
<xs:simpleType name="list3Value1000Type">
<xs:restriction base="listValue1000Type">
<xs:length value="3" />
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="valuePiType">
<xs:restriction base="xs:double">
<xs:maxInclusive value="3.14" />
<xs:minInclusive value="-3.14" />
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="listValuePiType">
<xs:list itemType="valuePiType" />
</xs:simpleType>
<xs:simpleType name="list3ValuePiType">
<xs:restriction base="listValuePiType">
<xs:length value="3" />
</xs:restriction>
</xs:simpleType>
</xs:schema>