When your project needs to target to a platform which is accessible only from a proxy, you may have to do it within SoapUI. However, when you are running your project files from a different machine, it might not be feasible to do the same . You can achieve it by putting the below script

import groovy.sql.Sql
import java.sql.DriverManager  
import java.sql.Connection  
import javax.sql.DataSource  
import java.sql.Driver;  
import java.util.*;  
import java.text.*; 
import com.orange.karma.testutils.Utils;
import com.eviware.soapui.SoapUI 
import com.eviware.soapui.settings.ProxySettings

//Set Proxy configuration
public void getProxySettings()
{
 // Get Current proxy configuration
 log.info "ENABLE_PROXY set to : " + SoapUI.settings.getString( ProxySettings.ENABLE_PROXY, "No Value set" )
 log.info "AUTO_PROXY set to : " + SoapUI.settings.getString( ProxySettings.AUTO_PROXY, "No Value set" )
 log.info "Host : " + SoapUI.settings.getString( ProxySettings.HOST, "No value set" )
 log.info "Port : " + SoapUI.settings.getString( ProxySettings.PORT, "No value set" )
}

// Define proxy settings on the project
getProxySettings()
def proxyHost = project.getPropertyValue("proxyHost")
log.info "proxyHost: > "+ proxyHost

if (proxyHost?.trim()) {
 def proxyPort = project.getPropertyValue("proxyPort")
 log.info "proxyPort: " + proxyPort + "... " + proxyHost?.trim()
 
 SoapUI.settings.setString( ProxySettings.HOST, proxyHost )
 SoapUI.settings.setString( ProxySettings.PORT, proxyPort )
 SoapUI.getSettings().setBoolean(ProxySettings.ENABLE_PROXY,true)
 SoapUI.getSettings().setBoolean(ProxySettings.AUTO_PROXY,false)
} else {
 SoapUI.getSettings().setBoolean(ProxySettings.ENABLE_PROXY,true)
 log.info "EnableProxy: " + SoapUI.settings.getString( ProxySettings.ENABLE_PROXY, "No Value set" )
}
SoapUI.saveSettings();
SoapUI.updateProxyFromSettings(); 
getProxySettings()

// Set URL for all testSteps under test cases
def testSuites =this.project.getTestSuiteList()
testSuites.each { testsuite ->
    // for all testCase inside testsuite...
    def testCases = testsuite.getTestCaseList()
    testCases.each { testcase ->
    // for all testStep inside testCase...
    def teststeps = testcase.getTestStepList() 
    targetURL = project.getPropertyValue( "EndPoint" )
    teststeps.each { teststep ->
                    teststep.setPropertyValue('endpoint', targetURL )
                                   
    }
}
}

targetURL = project.getPropertyValue( "EndPoint" )
log.info targetURL