title: Set background color in textfield from condition using iReport
body: <p>I have a problem with conditionalStyle in <em>iReport</em>. I have the following <em>textFields</em> (<em>${nameField} = field value</em>): </p>
  
  <p>${field1}=30 &nbsp;&nbsp; &nbsp;  ${field2}=40&nbsp; &nbsp; &nbsp;     ${field3}=50 <br>
  ${field4}=23&nbsp; &nbsp; &nbsp;     ${field5}=1  &nbsp; &nbsp; &nbsp;    ${field6}=45 <br>
  ${field7}=34  &nbsp; &nbsp; &nbsp;   ${field8}=20&nbsp; &nbsp; &nbsp;${field9}=0   </p>
  
  <p>I need set difference background in every textField depend of the value of the field. I create a new Style and set the conditions:</p>
  
  <pre><code>&lt;style name="ColoredField"&gt;
     &lt;conditionalStyle&gt;
       &lt;conditionExpression&gt;&lt;![CDATA[$F{field1} == 300]]&gt;&lt;/conditionExpression&gt;
      &lt;style mode="Opaque" backcolor="#FCFF00"/&gt;
      &lt;/conditionalStyle&gt;
  &lt;/style&gt;
  </code></pre>
  
  <p>As you can see, the Style use only <code>$F{field1}</code>, and I need make a dynamic style (or something), that apply to every <em>textField</em>. </p>