Decimal values are not inserting properly in datatable in database by calling the store proc

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C#

MVC5

When I am trying too execute store-procedure it inserting values correctly in database. Trying from front end (MVC,entityFramework(db First ) approach) it sending the values back and first and second table records are inserting correctly with accurate values in database.
values inserting purpose am using temptable on db side. calculation all things done in backend only.

What I have tried:

if I am using <pre>SET FMTONLY OFF

inserting only single record in database.
single records values (decimal Values) are inserting correctly.

when am removing the SET FMTONLY OFF in store proc it is inserting all records. but decimal filed values are inserting 0 values in data table.
can you please any one help me on this pblm.