Error converting data type varchar to numeric

[Samer Baskhayroun]

i have below part of Select statement  

IIF([APQ].[MinFlex] != 0.00, 'MinFlex:' & CONVERT(decimal(8,2) , [APQ].[MinFlex] ) , '0') AS OM_COMMENT, APQ.COMMENT 

Error :Error converting data type varchar to numeric

Any idea what is wrong ? 

[#2]

This might help you: Handling error converting data type varchar to numeric in SQL Server