CRM 2011 - Set value of currency field with javascript

I really can't find how i can retrieve the value from a currency field and set it as a value for another currency field for another entity.

My following code is not working:

var entities = retrieveRecords("trainingSet?$filter=trainingId eq guid'" + GetLoo开发者_运维技巧kUpData("trainingid").id + "'");
    if (entities != null) {
        if (entities.d.results.length > 0) {
            if (entities.d.results[0]["Price"] != null) {
                alert(entities.d.results[0]["Price"]);
                Xrm.Page.getAttribute("price").setValue(entities.d.results[0]["Price"].getValue());
                Xrm.Page.getAttribute("price").setSubmitMode("always");
            }

        }
    }

Error sais that the control only except numbers or null.

Any help would be really appreciated! Thanks!

I have used this before even though I am not a fan of the eval.

function SetMoneyAttribute(value, attribute) {
                      Xrm.Page.getAttribute(attribute)
                    .setValue(parseFloat(eval(value)));
        }

here is a blog post about setting form fields with queried values.

http://crmscape.blogspot.com/2011/03/crm-2011-odata-json-and-crm-forms.html

//mimic crm object model
var Xrm = { 
    Page : { 
        getAttribute : function(sAttr) { 
            return { 
                setValue : function(nValue) { 
                    alert(sAttr + ': ' + nValue);
                }
            }; 
        }  
    } 
};

function mySetValue(sAttr, nValue, nDefault) {
    Xrm.Page.getAttribute(sAttr)
        .setValue(
        !isNaN(nValue = parseFloat(nValue)) || 
        !isNaN(nValue = nDefault)
        ? nValue
        : null);                
} 

//call with various types of values
mySetValue("new_attr1",0);
mySetValue("new_attr2","");
mySetValue("new_attr3",4);
mySetValue("new_attr4",34.3434);
mySetValue("new_attr5","545.43");
mySetValue("new_attr6",{},0);
//mySetValue("new_attr7",entities.d.results[0]["Price"], 100.00);

As the error states the attributes requires only numbers or null. To comply the first isNaN checks if parseFloat returns a number. If it returns undefined it tries to get the number from the default value (if supplied). If that is undefined and not a number then it assign a null value. You may omit the second isNaN test if you don’t need a default or if the default is always known (i.e. null or 0.0)