Initialize the query in the report

We will assume the table as AssetTable( where the report is based on AssetTable), then write the code in init() method as
public void init()
{
    if(this.args().dataset() == TableNum(AssetTable))
    {
        AssetTable = this.args().record();
    }
    super();
}

Write the InitQuery() to initialize the query which is as follows..

public Query initQuery(Query _query)
{
    QueryBuildRange range;
    ;
    query = _query;
    if (AssetTable)
    {
        range = query.dataSourceTable(tablenum(AssetTable)).findRange(fieldnum(AssetTable,AssetId));
        if (!range)
            range = query.dataSourceTable(tablenum(AssetTable)).addRange(fieldnum(AssetTable,AssetId));
        range.value(AssetTable.AssetId);

or

SysQuery::findOrCreateRange(query.dataSourceTable(tablenum(AssetTable)), fieldnum(AssetTable, Assetid)).value(queryvalue(AssetTable.AssetId));
    }
    return query;
}

Now fi you call this specified report from the form which is based on Asset Table, then the report will run for specific Asset number.

// To avoid the usage data when called from Fixed Assets form(This will stop the usage data updates)
public boolean mustLoadSaveQuery()
{
    if (AssetTable)
    {
        return false;
    }
    else
    {
        return true;
    }
}
Thanks, and hope It will helps you.