Replace string within knowledge article on all places

[Rushi2]

Hi All, 

I am trying to replace one string in the knowledge article using the below script, it's not working.

Can anyone help me here 

var count = 0;

var ArticleGR = new GlideRecord('kb_knowledge');

ArticleGR.setLimit(100);

ArticleGR.setWorkflow(false);

ArticleGR.autoSysFields(false);

ArticleGR.query();

while (ArticleGR.next()) {

    var CanReadList = ArticleGR.u_kb_support_details;

    CanReadList = CanReadList.replace(/Assignment Group/g, 'Assignment');

    ArticleGR.u_kb_support_details = CanReadList;

    ArticleGR.update();

}

gs.log("KB replace count" + count);

Thanks,

Rushi

[Harish Bainsla]

var count = 0;
var ArticleGR = new GlideRecord('kb_knowledge');

ArticleGR.setLimit(100);
ArticleGR.setWorkflow(false);
ArticleGR.autoSysFields(false);
ArticleGR.query();

while (ArticleGR.next()) {
var CanReadList = ArticleGR.u_kb_support_details;

// Use the global replace() function to replace all occurrences
var updatedCanReadList = CanReadList.replace(/Assignment Group/g, 'Assignment');

if (updatedCanReadList !== CanReadList) {
ArticleGR.u_kb_support_details = updatedCanReadList;
ArticleGR.update();
count++;
}
}

gs.log("KB replace count: " + count);