# 3210 - Quantity screen

3210 – Quantity screen

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Please check the page “[Quantity Screen](https://doc.sysdevmobile.com/mss-extensibility/mss-5.1/functions-mss-to-kalipso/quantity-screen)” for detailed information
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<table data-header-hidden><thead><tr><th width="166.33333333333331">Event</th><th>Extension action set</th><th>Description</th></tr></thead><tbody><tr><td>Event</td><td>Extension action set</td><td>Description</td></tr><tr><td>Before </td><td>EXT_3210_1_Before</td><td>Will be executed before MSS open the quantity screen;</td></tr><tr><td>Replace</td><td>EXT_3210_2_Replace</td><td>Will replace MSS quantity screen;</td></tr><tr><td>After</td><td>EXT_3210_3_After</td><td>Will be executed after closing the quantity screen;</td></tr></tbody></table>