How to pass values from vm file to a method in Java Class

[Rahul_MG]

I have created a plugin which is getting populated in the Jira issue page. Used a .vm file to render the data.My requirement is to get the vales from the fields such as status and remarks field in the Java class method. 

I am new to using the .vm file and tried different mechanism which did not work out.Attaching the classes and the UI screen shot

VM File details

<style type="text/css">
.init-template-div {
margin-left: 5px;
border: 1px dashed #ccc;
border-radius: 0;
padding: 7px;
transition: background-color 0.01s linear 0.01s;
position: relative;
text-align: center;
}
.init-template-div > div {
padding: 4px 0;
}
</style>
<div id="issue-left" class="module toggle-wrap">
<div id="issue-left_heading" class="mod-header">
<ul class="ops"></ul><a href="#" class="aui-button toggle-title">
<svg xmlns="http://www.w3.org/2000/svg" width="14" height="14"><g fill="none" fill-rule="evenodd"><path d="M3.29175 4.793c-.389.392-.389 1.027 0 1.419l2.939 2.965c.218.215.5.322.779.322s.556-.107.769-.322l2.93-2.955c.388-.392.388-1.027 0-1.419-.389-.392-1.018-.392-1.406 0l-2.298 2.317-2.307-2.327c-.194-.195-.449-.293-.703-.293-.255 0-.51.098-.703.293z" fill="#344563"></path></g></svg></a>
<!--<h4 class="toggle-title">Configuration CheckLists</h4>-->
</div>
<div class="mod-content">
<div class="table-issue-panel ghx-container" data-nocache="1588788605635" id="elements-ISSUE">
<div data-reactroot="" style="background-color: white;">

<div id="95s1rtdyf" class="module">

<div class="panelHeaderTitleServer mod-header">
<b class="panel-title-label collapse-panel">
<span class="aui-iconfont-arrow2-down aui-icon aui-icon-small "></span>
</b>
<form class="aui top-label" style="margin-top: 15px;" action="/saveCheckPoints">
<fieldset class="top-label">

<div class="field-group top-label">
<label for="generatedNodeId-15">Check Points</label>

<select name="globalConfigurationDetails" id="globalConfigurationDetails"
class="text auiTextInput">
<option value="-1">--Select Issue Types--</option>
#foreach( $globalConfigurationDetails in $globalConfigurationDetailsList )
<option value="$globalConfigurationDetails" >$globalConfigurationDetails</option> #end
</select>
</div>

<div class="field-group top-label">
<label for="generatedNodeId-15">Status</label>

<select name="status" id="status"
class="text auiTextInput">
<option value="-1">-Select Status-</option>
<option value="YES" >YES</option>
<option value="NO" >NO</option>
<option value="NA" >NA</option>
</select>
</div>

<div class="field-group top-label"><label for="issue_panel_new_element47ujln567">Remark</label>
<input type="text" id="remarks" name="remarks" class="text auiTextInput long-field" value="">
</div>

</fieldset>
</form>
</div>

</div>

<span class="issue-form-actions"><button class="aui-button aui-button-compact marginRight" aria-disabled="false">Create</button><a id="1dm5gbplj" href="#" class="actionLink ">Cancel</a></span>
</div>
</div>

</div>
</div>

Java Class

package com.example.plugins.tutorial;

import com.atlassian.jira.issue.Issue;
import com.atlassian.jira.plugin.webfragment.contextproviders.AbstractJiraContextProvider;
import com.atlassian.jira.plugin.webfragment.model.JiraHelper;
import com.atlassian.jira.user.ApplicationUser;
import com.atlassian.jira.issue.CustomFieldManager;
import com.atlassian.jira.issue.fields.CustomField;
import com.atlassian.jira.component.ComponentAccessor;
import com.atlassian.jira.issue.customfields.CustomFieldType;

import java.sql.Timestamp;
import java.time.LocalDate;
import java.util.HashMap;
import java.util.Map;
import java.util.List;
import java.util.ArrayList;
import java.sql.Date;
import java.time.format.TextStyle;
import java.util.Locale;
import java.util.Arrays;
import javax.servlet.http.HttpServletRequest;

import com.atlassian.plugins.tutorial.objects.CustomFieldNames;
import static java.time.temporal.ChronoUnit.DAYS;

import com.atlassian.plugins.tutorial.utils.DBUtils;
import com.atlassian.plugins.tutorial.objects.GlobalConfigurationDetails;

public class DueDateIndicator extends AbstractJiraContextProvider {

@Override
public Map<String, Object> getContextMap(ApplicationUser applicationUser, JiraHelper jiraHelper) {
Map<String, Object> contextMap = new HashMap<>();
Issue currentIssue = (Issue) jiraHelper.getContextParams().get("issue");

String currentIssueType = currentIssue.getIssueType().getName();
String currentStatusType = currentIssue.getStatus().getName();

/**
* Logic to fetch the Configuration based on the issue typeand status.
*/
List<String> globalConfigurationDetailsList = new ArrayList<String>();

globalConfigurationDetailsList = DBUtils.filterGlobalConfigurationDetails(currentIssueType, currentStatusType);

contextMap.put("globalConfigurationDetailsList", globalConfigurationDetailsList);



return contextMap;
}

}

UI  Screen Shot