Hi Mohammad Yusuf,
Try the following javascript code. You can write similar javascript for disable ribbon.
Regards,
if (Xrm.Page.getAttribute('statuscode').getSelectedOption().value == 1) {
window.setInterval("OnLoadOfRibbon(2)", 20);
}
else {
window.setInterval("OnLoadOfRibbon(1)", 20);
}
function OnLoadOfRibbon(value) {
var CampaignActivityPropogate = window.top.document.getElementById("campaignactivity|NoRelationship|Form|Mscrm.Form.campaignactivity.CampaignActivityPropogate-Large");
if (value == 1) {
CampaignActivityPropogate.style.display = 'none';
}
else if (value == 2) {
CampaignActivityPropogate.style.display = 'inline';
}
}