Typecast not working

After changing datatype from Decimal to Varchar - It worked. However, still wondering if this is good way of returning decimal value with Varchar instead of Decimal. Really appreciate your feedback how better this could handle and where potentially the issue lies. 

I personally wouldn't recommend storing the amount as a varchar. Probably best to find the root cause of this issue.

This is what I am asking. What should I do? Please see below code I am using to achieve.

  a!forEach(
    items: ri!empdetails,
    expression: 
      'type!{urn:com:appian:types:TPR}TPR_TEST'(
        name: fv!item.name,
        joinDate: fv!item.date,
        quantity: if(
          rule!GLB_isBlank(
            index(fv!item, "amount", {})
          ),
          {},
          fn!text(
            fixed(
              abs(
                sum(
                    index(fv!item, "amount", {}),
                )
              ),
              2,             
            ),
            "00.00"
          )
        ),
        account: fv!item.account,
      )
  )

As I said, I have changed datatype from Decimal to Varchar for quantity field. 

It would be appreciated If I get assistance on this.

Please post the xsd for the data type. Also curious to know what type ri!empDetails is.

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:tns="urn:com:appian:types:TPR" targetNamespace="urn:com:appian:types:TPR">
  <xsd:complexType name="TPR_TEST">
    <xsd:annotation>
      <xsd:appinfo source="appian.jpa">@Table(name="TPR_TEST")</xsd:appinfo>
      <xsd:documentation><![CDATA[This data type refers to test data]]></xsd:documentation>
    </xsd:annotation>
    <xsd:sequence>
      <xsd:element name="id" nillable="true" type="xsd:int">
        <xsd:annotation>
          <xsd:appinfo source="appian.jpa">@Id @GeneratedValue @Column(name="id", nullable=false, unique=true, columnDefinition="INT")</xsd:appinfo>
        </xsd:annotation>
      </xsd:element>
      <xsd:element name="name" nillable="true" type="xsd:string">
        <xsd:annotation>
          <xsd:appinfo source="appian.jpa">@Column(name="Name", columnDefinition="VARCHAR(41)")</xsd:appinfo>
        </xsd:annotation>
      </xsd:element>
      <xsd:element name="joinDate" nillable="true" type="xsd:string">
        <xsd:annotation>
          <xsd:appinfo source="appian.jpa">@Column(name="JoinDate", columnDefinition="VARCHAR(10)")</xsd:appinfo>
        </xsd:annotation>
      </xsd:element>
     
      <xsd:element name="quantity" nillable="true" type="xsd:string">
        <xsd:annotation>
          <xsd:appinfo source="appian.jpa">@Column(name="Quantity", columnDefinition="VARCHAR(600)")</xsd:appinfo>
        </xsd:annotation>
      </xsd:element>
      <xsd:element name="account" nillable="true" type="xsd:string">
        <xsd:annotation>
          <xsd:appinfo source="appian.jpa">@Column(name="Account", columnDefinition="VARCHAR(80)")</xsd:appinfo>
        </xsd:annotation>
      </xsd:element>
    </xsd:sequence>
  </xsd:complexType>
</xsd:schema>

Please check the attached file. Actually I tried uploading xsd file but it seems not supported xsd extension - therefore, I converted it to normal text file and upload the same.

1. In this xsd, quantity is set to varchar(600).

2. Also didn't mention what type the rule input was (empDetails).

1. Yes. But, I have changed this to varchar(50).

2. empDetails (List of TPR_TEST (urn:com:appian:types:TPR))

1. Yes. But, I have changed this to varchar(50).

2. empDetails (List of TPR_TEST (urn:com:appian:types:TPR))